Dnia 26.08.2020 o godz. 11:50:01 Scott Mutter via mailop pisze: > I should note, forcing TLS is different from preferring TLS. I think a lot > of MTAs (at least Exim, I think?) prefer TLS and will attempt to negotiate > a STARTTLS session, but if that fails, then it will continue without TLS.
This is called "opportunistic TLS" and is currently default setting in pretty much all MTAs. Should not be changed to mandatory TLS, because - as you already noticed - there are still receiving servers that don't support TLS, and you may lose mail deliverability if you use mandatory TLS on sending. -- 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://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
