Microsoft 365 admins warned of new Google anti-spam rules

This week, Microsoft issued a warning to Microsoft 365 email senders advising them to authenticate outbound messages. This action was motivated by Google’s recent announcement of stronger anti-spam guidelines for bulk senders.

By setting up email authentication for your domain, you can ensure that your messages are less likely to be rejected or marked as spam by email providers like Gmail, Yahoo, AOL, and,” the Microsoft Defender for Office 365 team noted.

This is especially important when sending bulk email (large volume email), as it helps maintain the deliverability and reputation of your email campaigns read more Microsoft 365 admins warned of new Google anti spam rules.

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