Sophos Email customers using IP-based mailflow rule connectors must migrate to certificate-based configuration by March 31st. To see if you're affected Click Here.

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[Sophos Notification] Advisory: Central Email, Sophos Email Appliance, PureMessage for Unix delivery to comcastbusiness

Jasmin

Hi everyone,

Customers may receive NDRs when sending Outbound emails using *.comcastbusiness.net. These emails will not show in the Central Email logs at the moment.

For more information, please refer to the below article:



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