https://bugs.exim.org/show_bug.cgi?id=2402
--- Comment #2 from Bjoern Jacke <[email protected]> --- I found the reason for this helo validation failure. I added a while ago this line: dns_ipv4_lookup = *.freenet.de to the exim.conf because there was a issue with the remote MTAs of that provider making forward-confirmed reverse DNS checks which failed with the IPv6 addresses that where used by exim from our site. While for outgoing mail dns_ipv4_lookup can be helpful I think for helo verification dns_ipv4_lookup needs to be ignored because we are not able to influence if a certain remote site uses v6 or v4 to deliver mail to us. -- You are receiving this mail because: You are on the CC list for the bug. -- ## List details at https://lists.exim.org/mailman/listinfo/exim-dev Exim details at http://www.exim.org/ ##
