Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

Thread Info
  • State Not Answered
  • Locked Locked
  • Replies 1 reply
  • Subscribers 39 subscribers
  • Views 6630 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: SpamCop RBL blocking emails - Sender IP Address is blacklisted

FloSupport

Note: This issue also affects: Sophos Email and Cyberoam.

Summary

Sophos Support has received a number of customer reports related to emails being blocked when using the SpamCop RBL. "Sender IP address is blacklisted" is displayed as the reason in the log viewer.

  • This was a result of third-party RBL SpamCop ("bl.spamcop.net") failing to extend their domain registration and all IPs being blocked.
  • This issue has since been resolved by SpamCop, however it may take some time until all DNS servers are updated.

Workaround

Customers affected by this issue are advised to temporarily remove SpamCop from their email policy settings (listed by default under the "Premium RBL Services" RBL Group).



Archiving this advisory.
[edited by: FloSupport at 9:28 PM (GMT -8) on 8 Feb 2021]
Unfiltered HTML