Dnia 25.10.2024 o godz. 19:52:09 Matus UHLAR - fantomas via mailop pisze: > >and ehlo/helo hostname matching. > > Never heard about this. It's also a RFC violation. The hostname in > EHLO must exist and be canonical name (thus not CNAME), but that's > all. > > I have also never heard about any server enforcing this - got an > example of such server?
Never heard of actual HELO/rDNS matching, but it's quite common that servers put various restrictions on HELOs, and reject names they consider to be suspicious, for example "generic" names like "ip-xxx-xxx-xxx-xxx.some-isp.com" (even if that name actually exists in the DNS, and even if it matches rDNS). -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub." _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
