Dnia 17.10.2020 o godz. 18:25:13 Wietse Venema pisze: > For the port > 25 MTA-to-MTA service one can then reject all mail from a remote > site that claims to be from a local user.
That's not a good idea. Assume domain.com is configured that way and some user on a completely different domain (us...@site.net) forwards their mail to us...@domain.com. Then what happens if some otheru...@domain.com sends mail to us...@site.net ? One large email provider in Poland was once configured that way (or maybe still is?). That provider was domain.com from this example, and I was at that time administering a mail server at a university that was site.net from this example. Many people forwarded their university email to private email acccounts, some of them being at domain.com. This caused a lot of trouble for us. -- 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."
