Hello List, We have several issues sending mails to gmail/google over IPv6.
Background: We are a local ISP in Germany with about 40,000 private customers. We had a spam problem with one of our customers, that burned our IPv6 mailserver addresses. This problem has been fixed. We now run an rspamd on our outgoing mailservers. Problem: We try to publish new IPv6 addresses on our outgoing mailserver. We started with 5% of our outgoing mails over these new addresses and it works like a charm. Except for gmail/google. After a few hours/days, they block our mails from us with the "likely unsolicited mail" error message. IPv4 works without any problems. Does anybody have a hint for us, how to fix this problem? Best regards, Thomas _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
