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Mail can't bypass spam filtering when the sender's IP is added to the Client Allow List


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Symptoms

In Microsoft Exchange Online, you can add an IP address to the Client Allow List (based on the guidance in Configure the connection filter policy) so that email from that IP address assigned a Spam Confidence Level (SCL) rating of -1 and therefore not subject to spam filtering. However, in some circumstances, mail from that IP address is still filtered.

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Resolution

Administrators can use an Exchange transport rule to set the spam confidence level to Bypass Spam Score by using the Sender's IP address is in the range condition. For more information, refer to Use mail flow rules to set the spam confidence level (SCL) in messages.

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Keywords: vkb231, vkb339, Client Allow List IP, cannot bypass Spam Filtering, kb, kbsurveynew

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Article Info
Article ID : 4052852
Revision : 10
Created on : 11/8/2017
Published on : 11/8/2017
Exists online : False
Views : 657