On Tue, Apr 30, 2019 at 09:08:34AM +0200, Thomas Walter via mailop wrote: [..] > We have a lot of students forwarding their emails to external mailboxes > (usually freemailers even though they have more options here).
Same problem here... and it was very annoying and support consuming. [..] > I can show you all kinds of examples where the forwarding is rejected in > those cases because the new "sending IPs" are from our machines, not the > ones listed in the From's SPF record. > > And no, I don't do SRS, because I don't want to do workarounds to > support a protocol that was broken by design in the first place. [..] Just from our perspective, SRS works well as far as I can see, at least with a minor patched srs-socketmapd for our Sendmail environment. https://jk.kom.tuwien.ac.at/~jklasek/Software/srs-socketmapd/ Because not all of our e-mail addresses are bound to a mail account (with a real UNIX account behind it where one could easily set a new envelope sender), we attempted to address this envelope munging in the MTA domain simply to cover every case. And it worked well for a couple of years. -- Johann E. Klasek IT Solutions - Application Management Technische Universität Wien Tel: +43 1 58801- 42049 A-1040 Wien, Operngasse 11/020 (DF0421) Fax: +43 1 58801-942049 _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
