Hello,
we have a case here where the mails from a particular server are blocked with the log entry "Rejected: RBL (fur.global.sophosxl.com)". However, a check of the IP address via https://www.sophos.com/en-us/labs shows that the IP is "OK". What is the source of the RBL "fur.global.sophosxl.com" and how can someone get their IP address removed from this list?
Best regards
Jens Lange
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