Message identified as SPAM "Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'"

Carl Pullen 500

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)' Today i have received an email returned as spam. This was from an addressee who I correspond mostly, being a family member and I was sending them an important document. Both of these are Microsoft accounts (Hotmail and Outlook), both accounts are listed under my family 365 account, both using Microsoft Outlook and no other system for sending and receiving emails. Can you tell me why this is the case and how I am able to stop this in the future?

C Scott 110 Reputation points

2023-04-08T12:10:08.0966667+00:00

I have same problem - same message. Today received rejections from all emails I sent to various recipients over the last 2 days.
Christian Gustafson 45 Reputation points

2023-04-08T12:25:38.74+00:00

Hi Carl - I have the same issue (started late yesterday) and I’m using an Outlook.com account.
David Solomon 65 Reputation points

2023-04-08T13:45:50.5366667+00:00

Same started happening to me sending emails that have no obvious "spam" content - Googling this shows others are experiencing this. Seems obvious this is an issue on Microsoft's side. Can we get someone at Microsoft to investigate further?
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Gordon Myers 60 Reputation points

2023-04-08T13:50:55.5066667+00:00

I'm getting the same error. Something is wrong in you spam detection softwared
Flower1 40 Reputation points

2023-04-08T14:37:26.28+00:00

I had the same problem today (April 8), receiving two such messages for emails I had send on April 6. Both were not delivered to the respective recipients till today so the glitch must have started two days ago. The same problem has been posted elsewhere on this forum where the person shared the email message which showed that it was also initially send on April 6. Also, both my messages had nothing in there that may have looked like spam. Hope it will be addressed soon.
Ken Wynne 15 Reputation points

2023-04-08T14:38:59.23+00:00

I'm having this issue and mail is being sent from Microsoft 365 Outlook app, using an Outloook.com account. On a different computer my wife is having the same issue, outlook.com account, using Microsoft Office 365 Outlook app. The message is not spam. Must have been a MS change somewhere late Thursday, the 6th of April.
Ryan S 50 Reputation points

2023-04-08T15:06:41.75+00:00

I got the same behaviour as everyone in this thread. This is an O365 Family account. Issue started 2 days ago specifically Apr 6 6pm-11pm PST, unable to send outgoing emails from an iPad device. Incoming emails are OK. I sent a test email 2 days ago to my O365 Business email which was plaintext, no attachment and today Apr 8 at 1AM PST, I received the ******@outlook.com Undeliverable email bounceback. Email was sent from the official Microsoft Outlook app. I sent a similar test email 2 days ago from my O365 Business account from the same MS Outlook app, and I received the message instantly. Interesting bit - while I was having this issue 2 days ago, hence I tried sending email from my laptop device through the internet browser Outlook.com, and that went through. Both devices were connected to the same home network. Another interesting bit, my O365 Business account tagged the received emails (which ******@outlook.com marked as undelivered, but were still sent through today - 2 days later) as coming from Unverified Sender - which is wrong because the email was sent from a legit source - me. My current findings indicate the that issue impacted O365 Family users, and potentially specific to Mobile devices. Can others share your experience?
Brian Hovis 5 Reputation points

2023-04-08T15:40:35.2233333+00:00

Same problem and it started on Wednesday, April 5. Started getting undeliverable messages starting last night and through this morning Saturday, April 8 from emails sent all week. Some of those emails were apparently received.
City Racer 5 Reputation points

2023-04-08T16:01:53.6833333+00:00

I’m experiencing the same issue as others have described. Some of these emails were sent from my home computer, while others were sent from my phone. It didn’t make a difference.
mark feetham 0 Reputation points

2023-04-08T16:05:01.9933333+00:00

Same on mine and my sons.
D Bauer 10 Reputation points

2023-04-08T16:05:46.1533333+00:00

I had 3 different messages returned, from people who I have sent messages before with no problems. They were all different topics and all had the same spam error. "Your message wasn't delivered because the recipient's email provider rejected it. Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'." Can someone at Microsoft fix this issue?
NW 25 Reputation points

2023-04-08T16:36:38.53+00:00

I contacted my ISP which was a waste of time because they pointed me back to Microsoft. This is happening on all of my hotmail & outlook accounts to other hotmail and outlook accounts.

Annette Hall 85

I am having the same issue. The problem appears to be between the Microsoft servers PH7PR10MB7088.namprd10.prod.outlook.com (2603:10b6:510:268::18) and NAM02-BN1-obe.outbound.protection.outlook.com. The delivery time between these servers was 2545 minutes 36 seconds. A message that was returned as "undeliverable" was eventually delivered to the receiver.
I used the Microsoft Header Analyzer tool on the header of the message that was eventually delivered to the receiver with the following results: Received headers– 1 SN7PR10MB7002.namprd10.prod.outlook.com ([fe80::9e4a:f1d0:f42b:4c85]) SN7PR10MB7002.namprd10.prod.outlook.com ([fe80::9e4a:f1d0:f42b:4c85%5]) 4/6/2023 2:31:26 PM mapi 2 SN7PR10MB7002.namprd10.prod.outlook.com (2603:10b6:806:344::20) PH7PR10MB7088.namprd10.prod.outlook.com (2603:10b6:510:268::18) 4/6/2023 2:31:26 PM 0 seconds Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) 3 PH7PR10MB7088.namprd10.prod.outlook.com (2603:10b6:510:268::18) PH7PR10MB7088.namprd10.prod.outlook.com (2603:10b6:510:268::18); DCFSafetyNetReplay 4/8/2023 8:57:02 AM 2545 minutes 36 seconds MailboxResubmission 4 NAM02-BN1-obe.outbound.protection.outlook.com (mail-bn1nam02olkn2082c.outbound.protection.outlook.com. [2a01:111:f400:7eb2::82c]) mx.google.com 4/8/2023 8:57:03 AM 1 second ESMTPS 5 2002:a2e:9942:0:0:0:0:0 4/8/2023 8:57:03 AM 0 seconds SMTP Here is the original email header:

Received-SPF: pass (google.com: domain of ******@nam02-bn1-obe.outbound.protection.outlook.com designates 2a01:111:f400:7eb2::82c as permitted sender) client-ip=2a01:111:f400:7eb2::82c;
From: XXX <******@outlook.com>
To: ******@gmail.com>
Subject: FW: Save

Annette Hall 85 Reputation points

2023-04-08T17:31:53.7066667+00:00

I found this Microsoft health status website and I believe the Outlook issues are related: https://portal.office.com/ServiceStatus
Annette Hall 85 Reputation points

2023-04-08T17:33:28.5+00:00

See https://portal.office.com/ServiceStatus
Eric Noreen 15 Reputation points

2023-04-08T17:42:06.1466667+00:00

I am having the same problem. It cannot be keywords or other content because it happened with four completely different messages to different recipients. None of the content was even remotely spam. I had no attachments. It happens when I send messages from my Windows 11 computer and from my iPhone so it isn't malware. I use Outlook mail. Is it possible that my email account has been blocked?
IslandGirl35 10 Reputation points

2023-04-08T18:00:14.3633333+00:00

I just received a reply to an email I sent April 6/23 that was apparently blocked on April 8/23. In the reply, my email shows it was sent on April 8/23 @ 6:10am - the same time Microsoft emailed me to indicate it was blocked.
C Scott 110 Reputation points

2023-04-08T18:30:03.4+00:00

As a follow up, it appears 3 out of 4 rejected sent emails actually went through. Based on response from recipients, they didn't show to recipients until sometime this morning although the time stamp retained the original sent/received date and time of thursday....strange (!). With all the responses to this post, this seems to be a pervasive problem that showed up in the last 2 or 3 days. Coincidentally I had installed Zoom plug-in on tuesday, which I disabled this morning. Not sure if that was related to my problem.
Annette Hall 85 Reputation points

2023-04-08T18:47:04.44+00:00

see https://portal.office.com/ServiceStatus User impact: Users' sent email messages appear in the Sent folder but isn't received by recipients. Current status: We're continuing to apply the script to procedurally unblock, replay, and deliver the remaining impacted messages in smaller batches to ensure the volume remains manageable. To ensure success, we're monitoring the script progression and we'll provide a resolution timeline once available.
Dennis Mille 5 Reputation points

2023-04-08T21:10:38.6666667+00:00

I am having the same issue and receive the following error: MN2PRO4MB6416.namprd04.prod.outloook.com Problem started 4/6/2023.
Carol Randall 5 Reputation points

2023-04-08T21:12:42.3133333+00:00

I have the same problem. Same thing happened a year or so ago and the trouble was with Microsoft's end not us. Same thing again???
laura dierker 5 Reputation points

2023-04-08T21:31:18.5233333+00:00

I had the same thing as above. I just got a bounce on spam from an email I sent several days ago.
Pamela Austin 0 Reputation points

2023-04-08T22:14:00.0433333+00:00

Duplicate problem here - simple emails with no attachments or content to cause the issue as described by Vasim. Is this an MS problem, or have we been hacked?
Andy 10 Reputation points

2023-04-08T22:26:01.92+00:00

I also have the same issues as all the above. Emails from Thursday that were sent showed up as failed by the recipient due to the error of being marked as spam. Is Microsoft now aware? Will these emails be delivered or will we have to manually resend all of the emails from the past 2-3 days???
Jonathan Harris 5 Reputation points

2023-04-08T22:31:48.0466667+00:00

What is worse about this problem: The message that received this error message was a reply to my reply giving feedback on a essay from the sender. The subject line of the rejected message was. RE: my essay
Bill Bram 5 Reputation points

2023-04-09T01:36:01.16+00:00

I am an Office 365 user using Microsoft Outlook for Mac Version 16.71.2. I keep getting error messages Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)' Also, just started two days ago. Very Frustrating! I need my email for my work. PLEASE RESOLVE THIS ISSUE!
Nancy K 5 Reputation points

2023-04-09T04:49:53.7866667+00:00

I'm having the same problem. Looks like it started Thursday evening, April 6. Some emails have gotten through for sure, with what appears to be a until Saturday morning, April 8. Is there a way to report this?
Stamatis 10 Reputation points

2023-04-09T12:55:03.8066667+00:00

The same is happening to me, even when i send a report to myself, by using my hotmail account. I have set up my hotmail account in my router to send me daily reports. So a specific hotmail account sends the report to that very same account (both the sender and recipient are the same hotmail account) and yet i get the same '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'
Stamatis 10 Reputation points

2023-04-09T12:56:22.54+00:00

The same is happening to me, even when i send a report to myself, by using my hotmail account. I have set up my hotmail account in my router to send me daily reports. So a specific hotmail account sends the report to that very same account (both the sender and recipient are the same hotmail account) and yet i get the same '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'
Johnson 5 Reputation points

2023-04-09T15:09:02.82+00:00

In my case, all of the undeliverable rejections relate to messages the recipients actually did receive.

Patrick Austin 0


Outlook account started 4/6/23; cant even email myself
Delivery has failed to these recipients or groups:

Patrick XXXXXX ******@MSN.COM
Your message wasn't delivered because the recipient's email provider rejected it.
Diagnostic information for administrators:
Generating server: SJ0PR03MB5472.namprd03.prod.outlook.com
Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

Original message headers:
Received: from DS0PR03MB7289.namprd03.prod.outlook.com (2603:10b6:8:120::13)
 by SJ0PR03MB5472.namprd03.prod.outlook.com (2603:10b6:a03:27a::11) with
 Microsoft SMTP Server (version=TLS1_2,
 cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6277.31; Thu, 6 Apr
 2023 20:43:04 +0000
Received: from DS0PR03MB7289.namprd03.prod.outlook.com
 ([fe80::5335:7713:974:fe9]) by DS0PR03MB7289.namprd03.prod.outlook.com
 ([fe80::5335:7713:974:fe9%5]) with mapi id 15.20.6277.030; Thu, 6 Apr 2023
 20:43:04 +0000
Content-Type: application/ms-tnef; name="winmail.dat"
Content-Transfer-Encoding: binary
From: Patrick XXXXXX ******@MSN.COM
To: 
Patrick XXXXXX ******@MSN.COM
Patrick XXXXXX ******@MSN.COM
Subject: =?Windows-1252?Q?=91He=92s_a_war_criminal=92:_Elite_Putin_security_office?=
 =?Windows-1252?Q?r_defects_|_AP_News?=
Thread-Topic: =?Windows-1252?Q?=91He=92s_a_war_criminal=92:_Elite_Putin_security_office?=
 =?Windows-1252?Q?r_defects_|_AP_News?=
Thread-Index: AQHZaMhYLAzRfXyYOEerJI1nia+iMg==
X-MS-Exchange-MessageSentRepresentingType: 1
Date: Thu, 6 Apr 2023 20:43:04 +0000
Message-ID: <******@DS0PR03MB7289.namprd03.prod.outlook.com>
Accept-Language: en-US
Content-Language: en-US
X-MS-Has-Attach:
X-MS-TNEF-Correlator: <******@DS0PR03MB7289.namprd03.prod.outlook.com>
MIME-Version: 1.0
X-TMN: [3y06Zys8O27Cih9ELhDNT68yNRIECPm1]
X-MS-PublicTrafficType: Email
X-MS-TrafficTypeDiagnostic: DS0PR03MB7289:EE_|SJ0PR03MB5472:EE_
Return-Path: ******@msn.com
X-MS-Office365-Filtering-Correlation-Id: 7ee501bf-87fb-4116-6295-08db36df8521
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X-Microsoft-Antispam: BCL:0;
X-Microsoft-Antispam-Message-Info:
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B D 0 Reputation points

2023-04-09T22:10:30.8+00:00

this appears to be the one, yes, and looks like all messages should be delivered soon
Amber McLachlan Leavitt 0 Reputation points

2023-04-09T23:25:19.6733333+00:00

I also had this error. I sent a very important email on Thursday April 6/23 and it was returned on Saturday April 8/23 with Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)' Does this mean that on Thursday the recipient didn't get it? Do I need to resend?!?!?
Mj 0 Reputation points

2023-04-10T02:09:32.3733333+00:00

Having a similar issue on a returning email for a background check for a new job.
ChristyZhang-MSFT 25,871 Reputation points Microsoft External Staff

2023-04-10T07:52:57.5333333+00:00

Hi @Carl Pullen ,

Welcome to our forum!

Does this issue occur with Outlook.com/Hotmail.com account?

And does this issue occur in Outlook desktop client? If so, please log in to web mail to check if the issue persists.
Noman 5 Reputation points

2023-04-12T09:11:34.6766667+00:00

Same error from ******@outlook.com Most of the time I get throught this problem by removing any links to some url in my email... So most the time I must send my emails with another email account (not outlook / microsoft related).
Steven G 0 Reputation points

2023-04-14T20:40:33.3966667+00:00

Screenshot 2023-04-14 134902.jpg

There were three "Undeliverable" notifications that went straight to my Spam folder. However, I do not recall, nor do I have record of sending any emails to the recipients in my screenshot.

I am a subscriber to MS 365 Personal....Malwarebytes premium is installed on my device with an active subscription. The Undeliverable notifications were sent on 4/8/23 but their corresponding emails are dated 4/6/23. Why did the bounce back take 2 days to receive? Undelverable notification.pdf
Deleted

This comment has been deleted due to a violation of our Code of Conduct. The comment was manually reported or identified through automated detection before action was taken. Please refer to our Code of Conduct for more information.
Cristina Cheramie 0 Reputation points

2023-05-03T14:18:33.6133333+00:00

I have the same issue, started yesterday - I can't reply, or forward any emails.
Neil Kane 5 Reputation points

2023-05-10T18:18:27.1733333+00:00

I have been using Hotmail/Outlook for the better part of 25 years, and I'm about to switch entirely to Gmail because of this issue. I don't know where I would look, but it doesn't appear that Microsoft is acknowledging it or working on it. I have a TON of spam messages hitting my inbox now, and my outbound messages are getting rejected even when sent to people I communicate with all the time. When the service ceases to be usable, it's time to go.

Anyone at Microsoft have a response?
Gina B 5 Reputation points

2023-06-10T16:56:04.2033333+00:00

I have this same annoying problem happening to me sporadically with my MSN account. Emails bounce back with this 'blocked' message and they don't have any "spammy" content or attachments. Today I tried resending a message that had bounced without changing any of the text that I originally sent - I just changed from RTF (Rich Text) to Plain Text format and it was delivered. So try that as a workaround the next time it happens to you. I am using Outlook 2021 and it seems to be associated with that. Outlook 2021 is very buggy. Cheers, Gina
Julien Bonastre 0 Reputation points

2023-08-14T04:46:16.8333333+00:00

💯 Agree here @Neil Kane
Francois Crepeau 0 Reputation points

2023-11-06T02:53:09.7733333+00:00

Same here to a client I'm trying to send the invoice to.
yh 0 Reputation points

2023-11-06T08:41:45.1+00:00

Having the same issue suddenly.
Not just to one particular email address, but a handful of different emails that holds different domains.

I was still able to send the emails out perfectly last week.

Noora Svärd 25

Hi,

I get this same issue after the modem / wifi was updated to a new one. I can send attached emails through a phone that is not connected to wifi, but devices on wifi cannot send these.

If I send an attached email to myself, from Outlook to Outlook, it classifies it as spam. If I send from Gmail to Outlook, the messages come through. Messages without attachments will get through.

This is what I get:

Vianmääritystiedot järjestelmänvalvojille:

Palvelinta muodostetaan: DB9PR10MB5308.EURPRD10.PROD.OUTLOOK.COM

******@noorasvard.com
Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

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With best regards,

Noora

Tyler Lam 0

Have anyone got the solution for this specific problem? I just got the same issue today, at noon to be specific. Was fine this morning. still able to send and forward. It happened all suddenly at noon today. I was able to send an plain email without attachment though. But that won't help for important emails.

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ALAN 35 Reputation points

2023-11-06T09:40:19.6133333+00:00

Im having exactly the same issues here in UK this morning. I am sending email to contact save in my contacts, that I email daily. Can send emails without attachments no problem. If I add attachments, emails are rejected as spam. This is happening with multiple email addresses. So cant be an external issue. Come on microsoft! I am trying to run a business here. What good is your service if it doesnt work. Tried sending email attachment as onedrive links, but end user needs a microsoft account to access them! What sort of rubbish is this? Are you not meant to leaders in this field? Just about to take business over to gmail!
Paul Kuijten 15 Reputation points

2023-11-06T09:43:04.23+00:00

Same here as of today, only with attachments! Seems to be a glitch, annoying!
Ziyad Fairooz 0 Reputation points

2023-11-06T09:50:20.2433333+00:00

Same issue i have today

Can you please resolve it ?
Tyler Lam 0 Reputation points

2023-11-06T09:55:15.2633333+00:00

I have the same issue. Just happens today.

Someone please help!!!
Φανή Ζώη 0 Reputation points

2023-11-06T10:02:37.8533333+00:00

Same here, did anyone find any solution? I can' t send any email with attached files
Noora Svärd 25 Reputation points

2023-11-06T10:18:55.5+00:00

I have this problem in Finland and I have also a business to run!! I had exactly the same thought of moving everything to Gmail. I already tried it and everything seems to be working on the Gmail and emails are sent normally. Hopefully this problem could be solved soon...
Hossein 70 Reputation points

2023-11-06T10:19:39.79+00:00

It's the 6th of November 2023 and I have the same Issue, when i add any attachment i get this error, it seems to be a worldwide issue .

I hope Microsoft will solve the issue and not recommend people to change email setting.

I didn't touch setting and i am sending email to the same addresses that i send everyday and never had this problem.
Dennis Krishan 45 Reputation points

2023-11-06T10:21:18.6233333+00:00

Just had some info from the chat site. Was informed that they will try and solve the issue within 24 hours.
Lambert Thomas Naudin ten Cate 0 Reputation points

2023-11-06T10:22:28.0833333+00:00

I have the same problem. I cannot work like this! Please solve the problem ASAP!
Dennis Krishan 45 Reputation points

2023-11-06T10:25:06.99+00:00

Just had some info from the chat site. Was informed that they will try and solve the issue within 24 hours.
DSS Heating and Plumbing 0 Reputation points

2023-11-06T10:25:32.0266667+00:00

I think this must be a microsoft issue, as we cannot send emails with attachments either. Anyone know how we log this with microsoft?
F E 0 Reputation points

2023-11-06T10:26:18.5666667+00:00

I come form Hong Kong, the same problem
Dennis Krishan 45 Reputation points

2023-11-06T10:27:01.2866667+00:00

Guess we just have to wait now.
CHRIS NICOLAZI DESIGN 0 Reputation points

2023-11-06T10:27:30.56+00:00

J'ai le même pb aujourdh'ui, 6 nov 2023, impossible d'envoyé un mail avec fichier joint. Chaque mail est considéré comme spam. Il est rejeté.

Pour des mails fichier texte aucun pb.

Merci de solutionner cela rapidement.
Tyler Lam 0 Reputation points

2023-11-06T10:28:02.76+00:00

I got the same problem in Australia.
JuHa 0 Reputation points

2023-11-06T10:28:53.16+00:00

Same here with me in Germany.
Víctor Marcos Garcés 150 Reputation points

2023-11-06T10:30:40.49+00:00

I'm having the same issue on 6th of November 2023. Trying to e-mail contacts I have previously sent e-mails thousands of times before. Really frustrating, indeed.
Dennis Krishan 45 Reputation points

2023-11-06T10:31:56.26+00:00

Just had some info from the chat site. Was informed that they will try and solve the issue within 24 hours. Just have to wait I guess.
EDU EDU 0 Reputation points

2023-11-06T10:32:55.59+00:00

Estamos en españa y tenemos el mismo problema
colin trundle 5 Reputation points

2023-11-06T10:37:00.2433333+00:00

I'm having the same issue today (6th Nov 23). Sent an email with an attachment to my boss (a file that I've previously sent with no problem) at 9.20am, by 10am all my emails are being returned with the message - Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'
Kris Bat 0 Reputation points

2023-11-06T10:40:34.7566667+00:00

Nov 6th, same problem here. Does anyone know how to solve it ??
Kris Bat 0 Reputation points

2023-11-06T10:41:27.5466667+00:00

txt email is working fine but whenever I want to enclose a document it bounces back
Countryman Inn 0 Reputation points

2023-11-06T10:41:40.6233333+00:00

I'm having the same issue on Today 6th of November 2023. I've sent loads of emails this morning and they have all bounced back.

I need help please
Natalie 0 Reputation points

2023-11-06T10:45:20.89+00:00

Dennis, is there a public ticket number we can see the info on? Same issue in Aus with only emails which have 'attachments' failing for me
Dennis Krishan 45 Reputation points

2023-11-06T10:46:43.3366667+00:00

Its some issue with Outlook/ Hotmail and when contacted, i was told that they will solve it within 24 hours. So we just have to wait.
Dennis Krishan 45 Reputation points

2023-11-06T10:47:21.83+00:00

Its some issue with Outlook/ Hotmail and when contacted, i was told that they will solve it within 24 hours. So we just have to wait and see.
Hossein 70 Reputation points

2023-11-06T10:53:31.72+00:00

It's 6th of November 2023 at 11:51 CET and me and all of my collogues in Europe who are using Outlook/Hotmail are facing the same issue.

It is really annoying and i am using Gmail for now.
Gonçalo Monteiro 5 Reputation points

2023-11-06T10:59:54.9533333+00:00

I have the same problem.
Sandro T 0 Reputation points

2023-11-06T11:07:43.1166667+00:00

The problem is present only with web interface or the App, using the Outlook software in Office zero problems, it uses another server
Simona Cauli 10 Reputation points

2023-11-06T11:12:45.0366667+00:00

We have the same problem in Spain, me and my colleagues, we cannot attech any pdf
Gonçalo Monteiro 5 Reputation points

2023-11-06T11:16:38.13+00:00

The same problem in Portugal.
ALAN 35 Reputation points

2023-11-06T11:19:07.5033333+00:00

If this helps anyone. You can send emails with attachments. But only through the Mail desktop app "switched to old outlook" it will not send if switched to new app. Hopefully Microsoft will have this issue sorted soon!
Khalid Mohammed 0 Reputation points

2023-11-06T11:19:58.55+00:00

Same issue, all emails are bounced back
Stephen Wenfei Zhang 105 Reputation points

2023-11-06T11:25:36.4+00:00

Good point on the phone thing. I've just tried sending the same attachment on my phone. It works both when connected to WiFi and without. I am assuming it's a outlook.com thing, rather than WiFi/Mobile?

Can you confirm your problem occurred on outlook.com or the new Outlook app (which is essentially a wrapper of the outlook.com webapp)?
Stephen Wenfei Zhang 105 Reputation points

2023-11-06T11:26:07.2866667+00:00

Same problem in Australia
Nick Felstead 5 Reputation points

2023-11-06T11:27:53.1333333+00:00

Same problem this morning, so I did this suggested By Gina B in June...

Try resending the message that got hit with this as Plain Text (that will remove all links and URLs). I am using Outlook 2021 and an MSN account that have been seeing his issue occasionally. Re-sending the 'blocked' message in Plain Text format (not HTML or RTF) will usually get it to go through.
Ryan Kalhor 5 Reputation points

2023-11-06T11:37:59.2566667+00:00

Same issue since 9am 6th November UK time. Email bounced back. Hopefully issue is quickly resolved!
Stephen Wenfei Zhang 105 Reputation points

2023-11-06T11:40:10.32+00:00

Hi, could you check out my answer on page 5 (as of now) if possible? Check if it temporarily solves your issue :)
Miguel Lasa 10 Reputation points

2023-11-06T11:41:20.86+00:00

Same here. All emails sent from the browser were rejected. From the phone, even on the same wifi network, worked.
Līga Ozola 10 Reputation points

2023-11-06T11:42:33.4+00:00

I have the same problem today. E-mails with documents keep coming back.
göktürk bey 5 Reputation points

2023-11-06T11:44:10.7666667+00:00

malesef bende de aynı sorun var ve bu cok can sıkıcı. 06 kasım laneti sanırım bu. hüseyin in dediği herşeye bende katılıyorum. acil microsoftun buna bir çözüm bulması gerekiyor
göktürk bey 5 Reputation points

2023-11-06T11:47:18.13+00:00

herkese merhaba. 6 kasım da tüm dünyada bu problem yaşanıyor. bende türkiyeden bu problemi yaşıyorum. Geçici bir çözüm önerim şu olacak. cep telefonlarınızdan outlook uygulaması ile ek mailleri gönderebilirsiniz. orada şu anda bir sorun gözükmüyor fakat web tarafında problem büyük.
Desnave Lda 5 Reputation points

2023-11-06T11:54:48.4733333+00:00

Im having the same problem on 06/11/2023. Is there a solution?
Elmin H 5 Reputation points

2023-11-06T11:55:09.6033333+00:00

I have the same problem today Bosnia&Herz. E-mails with documents keep coming back.
Stephen Wenfei Zhang 105 Reputation points

2023-11-06T11:57:35.9766667+00:00

Hi try my solution on page 5? It'll be helpful to know if it works for you as well :)
SvenGlöckner 446 Reputation points

2023-11-06T12:00:13.4766667+00:00

The same here. All emails with PDF attachments are rejected. Either from outlook.com or new outlook desktop app.
Gonçalo Monteiro 5 Reputation points

2023-11-06T12:05:18.2133333+00:00

How can i change to the old outlook ?
André S 5 Reputation points

2023-11-06T12:11:05.4833333+00:00

Same problem here in Switzerland. I can't even send an e-mail to myself without it being marked as spam.
André S 5 Reputation points

2023-11-06T12:12:05.76+00:00

Same problem here in Switzerland. I can't even send an e-mail to myself without it being marked as spam.
52855936 0 Reputation points

2023-11-06T12:12:22.23+00:00

We have the same problem, we can not send any mail with PDF attachment. Hope the issue will resvolve quickly.
DILIP GIANCHANDANI 0 Reputation points

2023-11-06T12:29:26.94+00:00

I've got the same problem and it looks as that's Microsoft fall. Hope they will react soon as it brings me only troubles.
Mr.Ilker 0 Reputation points

2023-11-06T12:41:08.5133333+00:00

Same problem is still going on in also Turkey. Emails are coming back.

Try sending emails with your attachments zipping until the problem is resolved
Marie Rime 10 Reputation points

2023-11-06T12:42:06+00:00

Same in Germany
Andreia Tavares 5 Reputation points

2023-11-06T12:43:49.8366667+00:00

I have the same issue but the problem only occurs when sending emails with PDF attachments. All others attachments work properly.

My workaround is to compress all pdf files as zip and I can send the emails that way.

Has anyone found a solution for this yet?
So Ph 10 Reputation points

2023-11-06T12:51:52.34+00:00

Same in Belgium.
Lola Santiago Cañizares 5 Reputation points

2023-11-06T13:13:36.7+00:00

I am having the same problem. It goes through the messages without attachments but they are returned the one with attachment.

How can I solve this problem?

Thanks in advance,

Lola
Petr Pužman 5 Reputation points

2023-11-06T13:16:22.49+00:00

I can confirm that sending from mobile phone (ActiveSync client) works.
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k v 0 Reputation points

2023-11-06T13:35:05.03+00:00

Same problem here, how can we solve this? Sending only text works, attachements make mails return as indicated above 'blocked'

Kind regards,

Koen
Claudia Kaura 15 Reputation points

2023-11-06T13:40:23.3+00:00

The same here in Germany. Since 8:00 I cannot send emails with attachments
Claudia Kaura 15 Reputation points

2023-11-06T13:40:54.44+00:00

How can I solve the problem?
Contabilidade Ornelas 5 Reputation points

2023-11-06T13:43:26.3866667+00:00

Same in Brazil. I'm so infuriated
Syretta Hooker 10 Reputation points

2023-11-06T13:45:01.58+00:00

I also have this problem today. I can send emails without attachments but as soon as I attach a document it is being rejected as spam. I will try the workaround with the phone app whilst it is being "Fixed".
New - Asis 5 Reputation points

2023-11-06T13:52:51.1566667+00:00

the same here in argentine. Since 8:00 I cannot send emails with attachments
Dost Sigorta 0 Reputation points

2023-11-06T13:55:51.02+00:00

Aynı sorun bizde de var, sadece pdf uzantılı eklerde oluyor, aynı modem üzerinden telefonla giriş yaptığımızda sorun yok, ancak aynı modem üzerinden 2 ayrı bilgisayardan girdiğimizde 3 ayrı mail adresinde de sorun var, bu anlaşılması zor bir durum.
lorenzo 10 Reputation points

2023-11-06T14:08:16.3533333+00:00

The same in United States. It is stressful.
I Connollys 10 Reputation points

2023-11-06T14:21:23.62+00:00

Same here, UK, can't send any attachments, it is the account I use for my business, absolute nightmare.
LA 5 Reputation points

2023-11-06T14:23:15.2333333+00:00

6 Nov 2023 9:21 EST. Experiencing the same issue: Any email I send with an attachment I receive an undeliverable email: "Message blocked because it contains content identified as spam."
Tomasz Bąk 0 Reputation points

2023-11-06T14:24:46.5566667+00:00

Same in Poland.
Taavi Vasserman 0 Reputation points

2023-11-06T14:34:36.8366667+00:00

Same here in Estonia.
Xavier A 0 Reputation points

2023-11-06T14:38:19.1266667+00:00

confirmed multiple reports over Europe
Michel Resnik 5 Reputation points

2023-11-06T14:38:21.4666667+00:00

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

Same as everyone with pdf attachment , it goes to spam .

But OK with Jpeg .

Hope Outlook will solve quickly

Bye
Carolina Machado 5 Reputation points

2023-11-06T14:39:59.9766667+00:00

Same here Denmark, I was able to send a .zip file but I cannot send any PDF attachments
duemilacaffe 10 Reputation points

2023-11-06T14:40:04.2566667+00:00

The same here, in Italy. It's the account that we use for our business, very annoying.
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ambrose flynn 5 Reputation points

2023-11-06T14:47:56.97+00:00

Emails bouncing back today for first time, regardless of recipient.

It's certainly the attachment on my end as I can send emails out without the attachment and they are received.

Running a business it's incredibly frustrating trying to find a workaround.

Any advice appreciated.
Anisa 0 Reputation points

2023-11-06T14:49:51.9133333+00:00

I am experiencing this issue in the Netherlands too today. Frustrated because I am unable to use another email address as the documents are KYC related.
KS 5 Reputation points

2023-11-06T14:50:44.8266667+00:00

The same here, in France!
Michael Huang 0 Reputation points

2023-11-06T14:53:54.23+00:00

It's November 6, 2023 today, and I am having this problem when I am sending with attachment. I tried to send it to myself, same error message. But it seems to work when I send the same email from cell phone.
Anel Ekonomia 0 Reputation points

2023-11-06T14:54:05.0033333+00:00

same in Norway. How this get solved ?
Jolly Rozza 0 Reputation points

2023-11-06T14:57:02.9033333+00:00

Yes, same here (UK) - does anyone know if they're trying to fix it?
Matt Jones 0 Reputation points

2023-11-06T14:57:48.16+00:00

I agree. I can receive attachments but I can't send them out. I work in media on a print deadline and using Whats App to send my artwork to my clients
Syretta Hooker 10 Reputation points

2023-11-06T14:57:53.0866667+00:00

If you can, get the outlook app on your phone. Create the email with attachment and save to drafts. Load your mobile app and send it from the drafts folder on your phone, works for me how I don't know but until this gets resolved it's the only way I can send emails with PDF attachments.
TORRES Y CALERO S.A TOYCASA 0 Reputation points

2023-11-06T14:58:18.54+00:00

I'm having exactly the same issues here in SPAIN......

remote server returned '550 5.7.520 message blocked because it contains content identified as spam. as(4810)'

Please help
Matt Jones 0 Reputation points

2023-11-06T14:59:44.9333333+00:00

Back to Gmail it is then.
LIM TENG HWEE, KENNETH 5 Reputation points

2023-11-06T15:00:36.3166667+00:00

In singapore same issue. Only can send the email with no attachment.
Rachel Schmitt 0 Reputation points

2023-11-06T15:03:06.9866667+00:00

Same in Mississippi - US. When I go to Outlook or Hotmail, both state they are having no issues. How do we let them know there are issues and disrupting businesses?
Anthimos Salkitzoglou 5 Reputation points

2023-11-06T15:11:21.93+00:00

Greece has the same problem
Steve Danyleyko 0 Reputation points

2023-11-06T15:16:32.4366667+00:00

November 6, 2023 10amEST All my emails ...

Generating server: CH2PR14MB3721.namprd14.prod.outlook.com

@msn.com
Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

Generating server: PH7PR14MB6985.namprd14.prod.outlook.com

@matrixsupply.ca
Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'
Jens Eriksson 0 Reputation points

2023-11-06T15:18:47.2566667+00:00

Same problem here in Sweden.
Morty 5 Reputation points

2023-11-06T15:21:35.8266667+00:00

Same in Argentina. I can't reply to an email with pdf attached
EmelEmir-5225 5 Reputation points

2023-11-06T15:23:15.5633333+00:00

I have the same problem. I have been receiving following message:

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)

When I send myself an e-mail for testing, sometimes I get an e-mail, but mostly I get the message that the e-mail was not sent.

I would like help to solve this problem.
SAS PRO-SUD-DALLAGE 0 Reputation points

2023-11-06T15:25:17.8666667+00:00

j'ai le meme souci avez vous des réponses au probleme

merci
Silmara Falcão 5 Reputation points

2023-11-06T15:25:48+00:00

I have same problem, this is terrible for my work. How fix it, please? URGENT
73440816 5 Reputation points

2023-11-06T15:30:05.5066667+00:00

Does every email you tried to send have an attachment?
A KOROMILAS AND SIA OE 0 Reputation points

2023-11-06T15:31:43.7233333+00:00

Me too:

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

Someone to solve the issue?????
SAS PRO-SUD-DALLAGE 0 Reputation points

2023-11-06T15:32:11.41+00:00

oui tous les envoies
Edil Srl 10 Reputation points

2023-11-06T15:37:48.95+00:00

Hi

The same problem in Italy and I've noticed that only pdf. Not jpg! Hope MSN find, soon, a solution!!! We pay for the service! We need emails for business!
PAUL BRUNO 5 Reputation points

2023-11-06T15:42:06.13+00:00

Happening in the USA too...started last night and still dealing with the same issue this morning.
Robson R. Marcidelli de Almeida 5 Reputation points

2023-11-06T15:42:41.1633333+00:00

Same here, Brazil, can't send any attachments, it is the account I use for my business, absolute nightmare.
CLC CA 0 Reputation points

2023-11-06T15:44:20.2+00:00

same in Italy, it started this morning
RIZWAN ULLAH 0 Reputation points

2023-11-06T15:53:13.9033333+00:00

i am also having the same issue, Has any one found the solution ?
Ed Newcome 0 Reputation points

2023-11-06T15:59:56.86+00:00

Same here (UK). I can't even send myself an email if it contains an attachment. Microsoft please do something! This is my work email!!
RIZWAN ULLAH 0 Reputation points

2023-11-06T16:01:15.3133333+00:00

I have the same problem in the United Kingdom and I don't know what the solution is. but i guess the Hotmail/outlook is blocking the attachment and i guess only pdf.
YI CHEN 5 Reputation points

2023-11-06T16:01:26.26+00:00

Same in Canada..... Anyone got a solution?
PAUL BRUNO 5 Reputation points

2023-11-06T16:11:17.1566667+00:00

I just exported (saved) a PDF file as a JPG and was able to send it. That's a way to get around having your PDF files labeled as spam.
despina koukouraki 0 Reputation points

2023-11-06T16:13:13.9333333+00:00

I HAVE THE SAME PROBLEM
Gustavo Berron 0 Reputation points

2023-11-06T16:14:25.7766667+00:00

Same in Argentina
Clara P 0 Reputation points

2023-11-06T16:24:22.75+00:00

idem pour moi, impossible d'envoyer des mails avec pièces-jointes à des destinataires habituels !
Joahan Diaz 0 Reputation points

2023-11-06T16:26:54.5166667+00:00

Just got to work and I'm also getting the error. Im from mexico
Veronica Lagos 5 Reputation points

2023-11-06T16:31:35.4733333+00:00

Same problem with attachements!!!!
Peter Feng 20 Reputation points

2023-11-06T16:35:54.1933333+00:00

Nov 6th,2023.

Having the same errors send from webmail in hotmail account,

"Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'"

However, I could send the emails with attachments PDF files in "Windows Mail" apps.
Sébastien Nadeau 0 Reputation points

2023-11-06T16:39:36.8366667+00:00

Hi,

We started to have the same issue today. It seems to be related to an Hotmail account trying to send an email to one of our Exchange 2019 server mailboxes. It does not even go in the account's "spam" folder. It is directly rejected.

Since we handle a mail server that mostly receives emails with attachments sent by our customers in order to be further processed, this is a priority concern for us. The email feature is a central part of our sotware solution and all of our customers rely on this feature. A lot of them use Outlook mailboxes to send their attachments.

We hope that Microsoft will quickly resolve this.
Meredith R 20 Reputation points

2023-11-06T16:44:17.2266667+00:00

SAME HERE!! UGH!!! THIS IS ALL MY WORK EMAILS. HOW DO WE FIX THIS? I HAVE A PAID EMAIL ACCOUNT AND I STILL CANT GET A DAMN PERSON ON THE PHONE!
Peter Feng 20 Reputation points

2023-11-06T16:47:22.32+00:00

use "windows mail" apps instead of web link, I found that I can send emails with attachment in "windows mail" in the same account!
riccardo tagliarini 0 Reputation points

2023-11-06T16:48:23.3666667+00:00

come risolvere il problema?
Meredith R 20 Reputation points

2023-11-06T16:50:27.08+00:00

but all of my files are in my email. It's too hard of a transition unfortunately. Will it get fixed??
Meredith R 20 Reputation points

2023-11-06T16:52:35.4+00:00

"Is Outlook replacing Windows Mail and Calendar in 2024?"

The company recommends users to migrate to the new Outlook for Windows experience. “At the end of 2024 we will be ending support for the Mail and Calendar apps for Windows. The new Outlook for Windows helps people be more productive and in control of their inbox,” Microsoft explained.Jul 24, 2023
Xiaohang Yang 0 Reputation points

2023-11-06T16:53:27.3+00:00

Same question happened :“Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'” As soon as i send an email with pdf attached. But it was not appear in other attachments。JUST PDF. While app on tablet or cell photo have not this porblem.
Karim El Asri 5 Reputation points

2023-11-06T16:56:59.93+00:00

I have the same problem, Today I tried to send some documents to my professor and I faced this problem and I tried sending the same email to my brother and the same problem occured again, this is not good, it's annoying, btw I switched to gmail and it's working fine.
Meredith R 20 Reputation points

2023-11-06T16:59:16.5533333+00:00

Super ANNOYING!! Microsoft is SHIT without customer service.
kiaozé Cie 0 Reputation points

2023-11-06T17:05:56.5833333+00:00

J'ai le même problème, aujourd'hui j'ai essayé d'envoyer des documents à mon client et j'ai fait face à ce problème.

si le problème persiste je vais changer de boite mail et allez chez Gmail.

j'espère réellement que Microsoft vas régler très rapidement ce problème.
Aidan Jones 0 Reputation points

2023-11-06T17:09:22.35+00:00

Same here cannot send emails with PDF's
Francois Crepeau 0 Reputation points

2023-11-06T17:09:54.78+00:00

Sure but sometimes we want to send mails with links and attachment. One temporary solution given by another was to re-send with a cell phone via the app. Or saving as a draft on the pc or going thru the sent emails on the app and re-sending worked for me.
Peter Feng 20 Reputation points

2023-11-06T17:12:25.78+00:00
Tested again,

login www.hotmail.com to send emails with PDF attached file.

result: undeliverable, errors:

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

Used "Windows Mail" Apps to send the emails with attached PDF files. it went through!
Susie Quinn 0 Reputation points

2023-11-06T17:14:41.5433333+00:00

same here.....brutal
Esther Perez Palao 0 Reputation points

2023-11-06T17:15:27.24+00:00

Hi i am facing the same issue today november 6th from spain since this morning. I have many problems with recruiters please i need a solution
PAUL BRUNO 5 Reputation points

2023-11-06T17:19:30.1933333+00:00

Save or convert PDF to a PNG or JPG and resend. Those formats won't be rejected.
Sharon whp 5 Reputation points

2023-11-06T17:22:21.8433333+00:00

Same here. Absolute nightmare!
Jegovics 0 Reputation points

2023-11-06T17:30:10.1166667+00:00

Same in Hungary.
LL Logistics 5 Reputation points

2023-11-06T17:30:22.83+00:00

Same here in Texas, United States. I know it's not the best solution, but if you have your email on your phone, once you send it from your desktop, you can go into your sent folder on your phone and forward it to your recipient from there and it will go through without being rejected. I have had to do that with every email today that has a PDF attached. Thank goodness business is slow today!
Marco Allione 0 Reputation points

2023-11-06T17:51:41.9033333+00:00

same here, from Italy.
Daniel Hnyk 61 Reputation points

2023-11-06T18:12:12.1033333+00:00

I have the same issue with sending PDF attachments. I opened service support ticket for M365 for family subscription this early afternoon. I had a call in some minute from tech support, but that support guy told me, he is not able to hear me and hang out the call. Currently i am not able to sign in that support portal to review my opened ticket. I noticed that their web pages sometimes don't work as well. Sometimes i have some error as you don't have a permission when I want to visit some support page or MS main page. I think the rollup some update to non-business customer, and I hope they are working on fix.
Kerrence1971 0 Reputation points

2023-11-06T18:31:18.01+00:00

Same issue here in the UK ... 24 hours and Microsoft seem to be resting on their laurels and not communicating to their Users! Can't use either my personal or business emails effectively!!!
Excel Accounting 0 Reputation points

2023-11-06T18:35:41.4233333+00:00

same here in seattle... can't send any attachments so I had to just send screenshots... it accepts screenshots.
William Schafrick (TMMC) 5 Reputation points

2023-11-06T18:35:58.19+00:00

Had the same problem trying to attach any PDF to an email with the web client. Saved the email as a draft, and opened/sent it on my Iphone with success.
Veronica Cruz Castillo 0 Reputation points

2023-11-06T18:40:52.56+00:00

Hola buen día

Tengo el mismo problema, todo lo marca como spam, si hay alguna solución por favor de informar o saber que hacer con este detalle.

Gracias.
Felippe Castelli 0 Reputation points

2023-11-06T18:40:58.9733333+00:00

Hello, same problem here, Brazil.
José Augusto - Engenheiro projetista mecânico 0 Reputation points

2023-11-06T18:44:45.46+00:00

The same in Brazil. It's my business account.
Portal Impositivo 0 Reputation points

2023-11-06T18:47:40.6133333+00:00

Mismo problema - Argentina. Sucede cuando mando PDF. Si mando un JPG sí funciona ok. Estoy enviando una solicitud en la opción de Ayuda de Outlook. Hay que reportarlo para que lo arreglen.
Daniel Vera Sánchez 0 Reputation points

2023-11-06T18:50:42.8933333+00:00

Tengo el mismo problema, parece que es general, pido ayuda para solucionar este problema, gracias
C.P. Uriel Posada 0 Reputation points

2023-11-06T18:54:48.8866667+00:00

La solución temporal es enviarlos por android, a mi me funcinó.
Karel Z 0 Reputation points

2023-11-06T18:57:33.0933333+00:00

same here in the States...ugh...I have work to send out.
Tamara Lamm 5 Reputation points

2023-11-06T18:59:20.2766667+00:00

I am having the same issue and I cannot use my phone. I am using desktop as that is where all of my files are. This has become increasingly frusutrating as the day goes by.
Meredith R 20 Reputation points

2023-11-06T19:01:33.01+00:00

TEMPORARY SOLUTION!!!

GO TO YOUR HOTMAIL ACCOUNT (IM USING HOTMAIL.COM

CREATE A NEW EMAIL

INSERT

ATTACHED FILE

SELCECT UPLOAD AND SHARE

PICK YOUR FILE FROM YOUR COMPUTER

SELECT UPLOAD AGAIN WHEN IT PROMPS YOU.

IT WILL UPLOAD AS A LINK.

AND THAT WORKED FOR ME!!
Meredith R 20 Reputation points

2023-11-06T19:02:34.6533333+00:00

TESTING, I FOUND A SOLUTION
Meredith R 20 Reputation points

2023-11-06T19:05:48.9066667+00:00

GO TO HOTMAIL.COM

CREATE A NEW EMAIL

INSERT

UPLOAD AND SHARE

PICK YOUR FILE

SELECT UPLOAD AGAIN WHEN IT PROMPTS YOU

IT WILL UPLOAD THE FILE AS A LINK.

THAT WORKED FOR ME WHEN I SENT IT!!!

WORKS FOR THE TIME BEING IN THE WWW.HOTMAIL.COM MAIL VERSION.
Meredith R 20 Reputation points

2023-11-06T19:06:09.7533333+00:00

GO TO HOTMAIL.COM

CREATE A NEW EMAIL

INSERT

UPLOAD AND SHARE

PICK YOUR FILE

SELECT UPLOAD AGAIN WHEN IT PROMPTS YOU

IT WILL UPLOAD THE FILE AS A LINK.

THAT WORKED FOR ME WHEN I SENT IT!!!

WORKS FOR THE TIME BEING IN THE WWW.HOTMAIL.COM MAIL VERSION.
Meredith R 20 Reputation points

2023-11-06T19:06:32.6433333+00:00

GO TO HOTMAIL.COM

CREATE A NEW EMAIL

INSERT

UPLOAD AND SHARE

PICK YOUR FILE

SELECT UPLOAD AGAIN WHEN IT PROMPTS YOU

IT WILL UPLOAD THE FILE AS A LINK.

THAT WORKED FOR ME WHEN I SENT IT!!!

WORKS FOR THE TIME BEING IN THE WWW.HOTMAIL.COM MAIL VERSION.
Tamara Lamm 5 Reputation points

2023-11-06T19:18:19.24+00:00

It looks like if you go and change your setting to text instead of html, it will send. Hopefully MS will fix this soon.
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Fabiano Brancher 0 Reputation points

2023-11-06T19:21:17.65+00:00

I'm having the same problem here.
Yesterday was working just fine.

I hope Microsoft fix this soon... it's causing me a lot of problems.

My workaround: Write your e-mail with attachments on Outlook Web, save draft.

Go to your smartphone and send through the Outlook Mobile app.
Gary Smith 10 Reputation points

2023-11-06T19:39:22.4433333+00:00

Same, I found that if you zip the pdf and it will send :)
Salma Hazel Contreras 0 Reputation points

2023-11-06T19:44:18.3166667+00:00

A mi también no me deja enviarte pdf ... México
LDDR 0 Reputation points

2023-11-06T19:58:11.6066667+00:00

Idem, depuis quelques jours !
Zakiya Hussain 0 Reputation points

2023-11-06T20:10:57.22+00:00

I have the same issue when I try to send a pdf. thi sis only happening with one outlook email, my other outlook email is fine, and my Hotmail email is fine too.

The error message is

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'

The problem started today.

Can anyone please help?
Mariana B 0 Reputation points

2023-11-06T20:19:25.8666667+00:00

Here in Brazil, is the same. I dont know what to do. All my accounts is the same error.
Zakiya Hussain 0 Reputation points

2023-11-06T20:20:10.1633333+00:00

https://jasoncoltrin.com/2021/12/20/how-to-fix-550-5-7-520-access-denied-your-organization-does-not-allow-external-forwarding/

i just found this, not sure if it works
Jose Murilo Medeiros 0 Reputation points

2023-11-06T20:43:26.7+00:00

Same in Brazil
Brent A Fowler 0 Reputation points

2023-11-06T21:07:35.48+00:00

SAME here in Texas
Nicolas Braure 0 Reputation points

2023-11-06T21:07:46.2766667+00:00

You can send the attachment as a zip file.
Nicolas Braure 0 Reputation points

2023-11-06T21:14:26.36+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:16:49.6633333+00:00

Celui-là ? En as-tu un autre
Nicolas Braure 0 Reputation points

2023-11-06T21:17:15.0766667+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:17:31.2033333+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:17:42.56+00:00

PDF seem to be the issue but you can send them as zip files
Arnaud Miquel 0 Reputation points

2023-11-06T21:18:56.1633333+00:00
Hi, I am in France. I tried to send to me a mail with a pdf attached. Guess what I received :

"Échec de la remise pour ces destinataires ou groupes : AM (******@hotmail.com)

******@hotmail.com Votre message n’a pas été remis car le fournisseur de courrier du destinataire l’a rejeté."

(See the English translation below)

So I rejected myself ... Obviously, a Microsoft problem ...

Delivery failed for these recipients or groups: AM (******@hotmail.com) ******@hotmail.com Your message was not delivered because the recipient's mail provider rejected it.
Nicolas Braure 0 Reputation points

2023-11-06T21:19:13.14+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:19:36.71+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:21:31.93+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:21:43.6333333+00:00

PDF seem to be the issue but you can send them as zip files
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Nicolas Braure 0 Reputation points

2023-11-06T21:23:42.9133333+00:00

les fichiers PDF semblent être le problème, envoi les en fichier zip
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Nicolas Braure 0 Reputation points

2023-11-06T21:24:53.6233333+00:00

PDF seem to be the issue but you can send them as zip files
Nicolas Braure 0 Reputation points

2023-11-06T21:24:59.3066667+00:00

PDF seem to be the issue but you can send them as zip files
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Tineke Van Lombergen 0 Reputation points

2023-11-06T21:39:19.47+00:00

Same in Belgium, normal mails no problem, with a pdf attached bounced
Didier TREADWELL 0 Reputation points

2023-11-06T21:52:29.2366667+00:00

IDEM EN GUYANE

Pour envoyer la pièce jointe,j'ai converti le pdf en word et ca passe

j'utilise Foxit pour les pdf
GILLI BOOTON 0 Reputation points

2023-11-06T22:15:03.4433333+00:00

Drove me mad today...just on pc, as phone seems ok...
PBShower Doors 5 Reputation points

2023-11-06T22:27:34.7333333+00:00

This is a work around, NOT a solution.
PBShower Doors 5 Reputation points

2023-11-06T22:29:57.39+00:00

Why does this show up in answers? This is NOT an answer. Even this website doesn't work. :(
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Graham Hollingsworth 0 Reputation points

2023-11-07T02:36:39.1+00:00

Same here in Tasmania. Can't send emails with attachments from Outlook web mail. However, I can from my phone's outlook app and from Microsoft Office Outlook on my pc, which I don't usually use, but will have to until this is fixed.
colin trundle 5 Reputation points

2023-11-07T09:00:32.2266667+00:00

Seems to be working again now
TheHigh Priestess 0 Reputation points

2024-03-28T04:30:16.38+00:00

I have a business account and customers that have all registered for email updates. Every single email saying this same message. I have deleted our logo, it still happens.

What the HELL is Microsoft doing about this!

I even sent an email to my daughter and got the same message! 😡😡😡
luciano cungi 0 Reputation points

2024-06-01T15:22:08.8633333+00:00

dal telefono funziona dal computer torna indietro come fare per sbloccare???
Peter Cruickshank 0 Reputation points

2024-11-23T11:30:06.6033333+00:00

I see this has been going on for over 18 months. Well done Microsoft for your prompt action in resolving this (NOT).

For me it happens every time from using MS Outlook I set up a meeting between me (outlook.com address) and a family member (outlook.com address with same surname). So they really can't complain its a 3rd party.
Rob Stuart 0 Reputation points

2025-01-07T20:39:46.44+00:00

I had the same problem. I tried the phone workaround with no luck. Then I noticed that where I had copied and pasted the recipient email address from another email, I had copied the whole line including the 'To:'. So, for example, 'To: John Smith' as oppose to just 'John Smith'.

Looking back at the messages that refused to be sent, the recipient was incorrectly 'To: To: John Smith'. Therefore, I simply copied and pasted the correct email address as 'John Smith' and hey presto the problem was solved!
Admin Veer 0 Reputation points

2025-01-14T11:37:40.9233333+00:00

I have a same problem. Pls suggest how to fix this. I am trying to send the mail to all regular mail but it is getting bounced back with the message as "Your message wasn't delivered because the recipient's email provider rejected it".

Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810).

Pls help.
Nicolas Champetier de Ribes 0 Reputation points

2025-01-17T13:00:44.6166667+00:00

How to fix it on the pc ? It's very desabling.

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Message identified as SPAM "Remote server returned '550 5.7.520 Message blocked because it contains content identified as spam. AS(4810)'"

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