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TonyRedmond's avatar
Apr 16, 2024

Exchange Online Moves to Tighten Platform Security

Exchange Online announced two important changes on April 15. SMTP AUTH is being depreciated and a new external recipient rate limit is being introduced. The changes are intended to improve the security of Exchange Online. The introduction of an external recipient rate limit is also intended to reduce the ability of spammers to abuse the platform.

 

https://office365itpros.com/2024/04/16/smtp-auth-deprecation/

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