Hi,@Andrew Mason
Thanks for posting your question in the Microsoft Q&A forum.
o ensure your Microsoft Exchange email addresses continue to function, you'll need to adjust your DNS settings at your domain host. Specifically, you need to make sure that your MX (Mail Exchange) records and any other necessary DNS records are correctly configured to point to Microsoft's Exchange servers. Here are the steps you'll typically need to follow:
Log in to the DNS management panel and add the following key records:
1. MX Record (Mail Server Routing)
- Host/Name: @ (or leave blank for the root domain)
- Record Type: MX
- Priority: 10 (adjust as needed)
- Target/Value: mail.yourdomain.com (replace with your Exchange server’s domain)
- TTL: 3600 (default)
2. A Record (Exchange Server Public IP)
- Host/Name: mail
- Record Type: A
- IP Address: Enter your Exchange server’s public static IP (e.g., 203.0.113.5)
- TTL: 3600
3. Autodiscover Record (CNAME)
- Host/Name: autodiscover
- Record Type: CNAME
- Target/Value: mail.yourdomain.com
- TTL: 3600
4. SPF Record (Anti-Spam)
- Host/Name: @
- Record Type: TXT
- Value:
v=spf1 ip4:your_exchange_public_ip ~all
Example: v=spf1 ip4:203.0.113.5 ~all
5. Optional: Reverse DNS (PTR Record)
- Contact your ISP or hosting provider to set up a PTR record for your Exchange server’s public IP, pointing to mail.yourdomain.com to improve email deliverability.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.