Dnia 23.06.2024 o godz. 12:20:37 Bill Cole via Postfix-users pisze: > Transparent forwarding is infeasible of the modern net. Forwarding > using SRS or encapsulation is still usable if you are willing to > accept that those methods are imperfect and add complexity to a mail > system. > > Forwarding outside of a common administrative realm carries > substantial risk of mail being blocked, even with the use of SRS or > encapsulation. It can seriously impair the reputation of the > forwarding site, particularly with mass-market mailbox providers. It > can often be a path for spam to get into mailboxes that it could not > get to directly. On the other hand, it is the same functionality at > the core of mailing lists like this one, which people find useful.
The forwarding issue is easily solvable. It's only the unwillingness of mainstream email providers to solve it. All it takes is to give the users of said provider access to an interface where they could define IP addresses or domains from which mail will be forwarded to their account. Then failed SPF should be ignored on these messages (so even classic forwarding can be used, which can be done by any MTA without need to install additional software), and if spam will be identified in such message, it should not count towards forwarding server's reputation. But nobody wants to implement this, they rather want to advise against forwarding. -- 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." _______________________________________________ Postfix-users mailing list -- postfix-users@postfix.org To unsubscribe send an email to postfix-users-le...@postfix.org
