On Wed, 4 May 2011 21:08:55 +0200, Ansgar Wiechers <li...@planetcobalt.net> wrote: >> How do I enforce that ? > Don't give your users login rights on your mail server.
what about webmail ? :) (sendt from 127.0.0.1 to 0.0.0.0 ip will get catched by permit_mynetworks, but not by permit_auth* unless its smtp authed)