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.

Thread Info
  • State Verified Answer
  • Locked Locked
  • Replies 1 reply
  • Subscribers 17 subscribers
  • Views 1576 views
  • Users 0 members are here
Options
Suggested
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

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,



This thread was automatically locked due to age.
Parents Reply Children
No Data
Unfiltered HTML