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Advisory: Sophos Central Email: Outbound emails blocked by Optonline ISP provider

FloSupport

Hi All,

Sophos has received reports from a small subset of Sophos Email customers who are experiencing outbound email delivery issues to recipients who use Optonline ISP. Sophos has since reached out to Optonline and submitted a request that Sophos IP addresses be removed from the blacklist.

This article will be updated as more information becomes available: https://community.sophos.com/kb/en-us/135674

Regards,



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