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IT Pro: 550 5.7.64 Relay Access Denied ATTR36 | Microsoft 365

Modified on: Thu, Apr 2, 2020 at 2:36 PM

If you receive this bounce back message after configuring server-side setup for MIcrosoft 365 then you must add Xink's SPF record in your DNS.


Solution: Proceed to --->  IT Pro: Adding SPF records

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