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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Emails Marked as "Successfully Delivered" but they do not reach Exchange

For at least 2 hours we have not received any external emails. All emails in the reports appear to process as normal, and external emails show as "successfully delivered" but the emails are never received. 

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