Office 365 Anti-Spam IP Delist Portal Display language:

If you're trying to send mail to an Office 365 recipient and the mail has been rejected because of your sending IP address, follow these steps to submit a delisting request.

Senders are responsible for making sure that their mail from this IP address isn't abusive or malicious.

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  1. Step 1: Send verification
  2. Step 2: Confirm email address
  3. 3. Delist IP

Step 1: Provide your email address and the IP address you want to delist so they can be verified.



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