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Sophos Server blocking outbound emails from domain

Hi 

I have an issue where Sophos server is blocking 1 particular email from our domain. Only from sending outbound email.

The email has been added into the allowed list and the blocked emails are not in the Quarantined email. Its outbound email is also not recorded in the logs or reports in the email gateway.

 The bounced email is from hydra.sophos server. May I know how to resolve this issue?



Added tags
[edited by: Raphael Alganes at 7:57 AM (GMT -7) on 26 May 2023]