7,825 questions with Exchange Server Management tags

Sort by: Updated
Updated Created Answers
3 answers

Exchange Server 2019 - ASP.NET 4.0.30319.0 Event ID 1309

Hello, I have an Exchange 2019 CU14 and it was working fine till I installed the Security Update for Exchange 2019 Cumulative Update 14 (KB5036401). since then my Event viewer is filled with ASP.NET 4.0.30319.0 Event ID 1309. ECP and OWA are working fine…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-06T05:37:56.73+00:00
EDDY RAFFOUL 0 Reputation points
edited a comment 2025-03-19T01:34:02.1566667+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
2 answers

Orange.fr SMTP does not deliver to my Exchange 2013 server anymore

Hi all, We use an on premise Exchange 2013 Server for our mail base. Since a few weeks, only mails from @orange.fr can't contact our organization. Any othe domain can. I update SPF, DKIM and dmarc policy on our domain but nothing has changed. Every…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-05T10:44:13.0466667+00:00
Mickael Vosgien 0 Reputation points
commented 2025-03-19T01:32:50.86+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
3 answers

When DelegateSentItemsStyle is set, the Mail is always stuck in Outbox

We saw online on TechNet, that it is possible to send a mail in the name of a shared Mailbox and we tried to save the mail in the sent items in the shared Mailbox, cause we don't need a copy in the primary Mailbox. I attached an image from TechNet,…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-13T15:17:38.1533333+00:00
Aus der Au Dino 0 Reputation points
commented 2025-03-19T01:28:05.4866667+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
4 answers

Hybrid agent setup failing on "Validating Hybrid Agent for Exchange usage

Hi, I am setting up a Hybrid Wizard config mail migration from on-prem to exchange online. I am using the Modern Hybrid Topology. I get a Validating Hybrid Agent for Exchange usage error: 20240312_070138.log I have also added the log file for further…

Exchange Server
Exchange Server
A family of Microsoft client/server messaging and collaboration software.
1,448 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
Microsoft Exchange Hybrid Management
Microsoft Exchange Hybrid Management
Microsoft Exchange: Microsoft messaging and collaboration software.Hybrid Management: Organizing, handling, directing or controlling hybrid deployments.
2,254 questions
asked 2024-03-12T14:23:02.9766667+00:00
Jabulani Motloung 181 Reputation points
answered 2025-03-18T17:29:33.5433333+00:00
Moritz Roth 0 Reputation points
2 answers

How to fix "This message couldn't be delivered because the sending email address was not recognized as a valid sender" error

When trying to send an email, I receive an error message stating "This message couldn't be delivered because the sending email address was not recognized as a valid sender. The most common reason for this error is that the email address is, or was,…

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,677 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2024-01-03T06:31:39.76+00:00
Rudraraj Mer 25 Reputation points
commented 2025-03-18T16:14:24.3133333+00:00
Orders 0 Reputation points
3 answers

How to fix Error Acquiring Token

I'm getting this error whenever i try to connect to Exchange online using PowerShell as Admin and I can't figure out how to fix it. Error Acquiring Token: Unknown Status: Unexpected Error: 0xffffffff80070520 Context: (pii) Tag: 0x21420087 (error code…

Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,796 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
PowerShell
PowerShell
A family of Microsoft task automation and configuration management frameworks consisting of a command-line shell and associated scripting language.
2,870 questions
asked 2025-01-13T15:53:39.0066667+00:00
Andrea Thiel 0 Reputation points
commented 2025-03-18T16:00:27.88+00:00
Raffaele Colavecchi 1 Reputation point MVP
2 answers

In place Exchange Application upgrade

I have exchange server running on Operating System 2016 and on exchange version 2016. With all upcoming changes coming, I need to update it to the Exchange version 2019 and then to Exchange SE when it becomes available later this year. Quick overview of…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-12T12:41:18.0966667+00:00
Mohsauga 40 Reputation points
commented 2025-03-18T07:32:29.8566667+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
1 answer

Problem with prod.outlook said: 451 4.7.500 Server busy. Please try again later

Hi Some clients send us mail with confirmation of receipt of the message (via server) And such messages are limited by you which prevents everyone from working. The limits appeared two weeks ago. No spam is sent or anything. Z8Qt64332z1Q9w6 12122 Fri…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-07T13:42:34.67+00:00
natan jamal 0 Reputation points
commented 2025-03-18T07:31:23.5866667+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
1 answer

Exchange stop warning with Warning ASP.NET 4.0.30319.0

Hi everybody, Exchange 2019 with last cu and su. i get multiple warning error : Log Name: Application Source: ASP.NET 4.0.30319.0 Date: 06/03/2025 18:51:23 Event ID: 1309 Task Category: Web Event Level: Warning Keywords:…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-07T08:21:19.98+00:00
Marco 1 Reputation point
commented 2025-03-18T02:36:49.18+00:00
Sharon Zhao-MSFT 25,436 Reputation points Microsoft External Staff
1 answer One of the answers was accepted by the question author.

Exchange server 2019 CU15 setup command question with best practice

Dear Sir, Customer has Exchange 2019 server running, they want to install CU15. Do it has any suggestion whether it is fine using below command? ```E:\Setup.exe /IAcceptExchangeServerLicenseTerms_DiagnosticDataOFF /Mode:Upgrade /DonotEnableEP Do it…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-17T04:31:32.5666667+00:00
JOE TAM 101 Reputation points
accepted 2025-03-18T02:25:56.6633333+00:00
JOE TAM 101 Reputation points
1 answer

Users Unable to Access Webmail or Outlook After Upgrading Exchange 2019 to CU15

Hi Everyone, After upgrading Microsoft Exchange Server 2019 to CU15, some users from different locations are facing issues accessing their email through webmail (OWA) and Outlook mobile app. Here are the specific problems we're encountering: Webmail…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-14T10:39:22.33+00:00
Ahmed Reja 0 Reputation points
commented 2025-03-18T02:02:36.41+00:00
Tianyi Chang (Shanghai Wicresoft Co Ltd) 1,115 Reputation points Microsoft External Staff
3 answers

The file size limits of .pst and .ost in Outlook Office 365 ?

what is the limit of *.ost or *.pst file in outlook in office 365

Outlook Management
Outlook Management
Outlook: A family of Microsoft email and calendar products.Management: The act or process of organizing, handling, directing or controlling something.
5,677 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2022-03-11T20:17:52.297+00:00
Jorge Santistevan 1 Reputation point
commented 2025-03-17T11:05:09.4833333+00:00
John 0 Reputation points
1 answer

Recent Exchange Calendar Sync Issues with iOS Devices, Exchange 2019 & 9646 Errors

Title: Exchange Calendar Sync Failures for some users with ExchangeIS 9646 App Log Errors Details: We have ~ten or so users that have reported calendar sync issues using Exchange On-Prem, iOS Native Calendar and our MDM (Ivanti MobileIron) over the past…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-15T20:52:25.56+00:00
KM_MB 0 Reputation points
answered 2025-03-17T08:16:57.8733333+00:00
Tianyi Chang (Shanghai Wicresoft Co Ltd) 1,115 Reputation points Microsoft External Staff
2 answers

Generic emails with @shadow.outlook.com on Random emails from Andriod devices with On prem mailbox

Hello, One of our users have this recurring issue that a generic email address ending with @shadow.outlook.com appears on the emails, that are sent using outlook app from an Andriod device. The email configured is hosted on an on-prem Exchange 2019…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-03T08:10:54.6433333+00:00
Ahmed Ali Shahul Hameed 0 Reputation points
commented 2025-03-17T07:03:16.9566667+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
1 answer

Outlook for iOS and Android is unable to connect to Exchange 2019

Outlook for iOS and Android is unable to connect to Exchange 2019. After adding the account, an error during authentication is displayed, please try again later. The built-in mail app of the mobile phone can connect, send, and receive emails normally.

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-03T05:56:56.37+00:00
Flash 0 Reputation points
commented 2025-03-17T06:41:59.3166667+00:00
Kaiyue Gong (Shanghai Wicresoft Co Ltd) 710 Reputation points Microsoft External Staff
2 answers

I am trying to connect the VPN access and I am not getting authentication message on my phone although my professional account is already being added in the Microsoft authenticator app

I am trying to connect the VPN access and I am not getting authentication message on my phone although my professional account is already being added in the Microsoft authenticator app

Microsoft Authenticator
Microsoft Authenticator
A Microsoft app for iOS and Android devices that enables authentication with two-factor verification, phone sign-in, and code generation.
8,361 questions
Microsoft Exchange Online Management
Microsoft Exchange Online Management
Microsoft Exchange Online: A Microsoft email and calendaring hosted service.Management: The act or process of organizing, handling, directing or controlling something.
4,796 questions
Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
Microsoft Configuration Manager
asked 2023-12-06T04:15:53.5666667+00:00
ravi shukla 5 Reputation points
answered 2025-03-16T08:04:43.5333333+00:00
VasimTamboli 5,125 Reputation points
3 answers

How to list multiple domains in an exchange mail flow exception rule?

In Exchange I created a mail rule to prepend a disclaimer for mail outside our organization, however I want to add a list of domains as an exception. The list of domains are our clients. I want to do this so emails do not have the External mail banner…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-10T21:26:06.96+00:00
Rose Ingrande 0 Reputation points
commented 2025-03-14T02:25:40.52+00:00
Sharon Zhao-MSFT 25,436 Reputation points Microsoft External Staff
1 answer One of the answers was accepted by the question author.

Clearing Disabled Archive GUID Exchange 2016

I have an Exchange 2016 server with very large mailboxes, greater than 100GB. I have created online archives of 45GB and run a retention policy to move all emails older than 7 days to this online archive, which I then export to a PST file. I dont want…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-12T15:03:42.4533333+00:00
Patr_UK 120 Reputation points
accepted 2025-03-12T23:05:06.9833333+00:00
Patr_UK 120 Reputation points
5 answers One of the answers was accepted by the question author.

Random Remote Server returned '554 5.6.0 Corrupt message content NDR emails

I have been getting reports of random NDR's with error code Remote Server returned '554 5.6.0 Corrupt message content; STOREDRV.Deliver.Exception:ConversionFailedException.ConversionFailedException.TextConvertersException; Failed to process message due…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2021-09-14T16:10:24.057+00:00
TRDx2 126 Reputation points
commented 2025-03-11T14:50:21.5+00:00
Tracy Lai 5 Reputation points
1 answer One of the answers was accepted by the question author.

Exchange Server Subscription Edition support for Edge Transport Sever

Hi I already posted this question 2 weeks ago, but unfortunately didn't get an answer. Can someone from Microsoft answer this question please? We have an Exchange 2019 hybrid setup that includes Exchange Edge Transport servers. Will this scenario…

Exchange Server Management
Exchange Server Management
Exchange Server: A family of Microsoft client/server messaging and collaboration software.Management: The act or process of organizing, handling, directing or controlling something.
7,825 questions
asked 2025-03-10T07:07:59.5+00:00
Peter 200 Reputation points
commented 2025-03-10T21:30:33.8466667+00:00
Peter 200 Reputation points