Mariusz Kruk wrote: > On Wednesday, 24 of February 2010, Per Jessen wrote: >> >> Well, I guess it depends on your point of view - how difficult is >> >> it to set up an MTA to reject mails pretending to be from >> >> <yourdomain> that didn't originate on your MTA? >> > Good question - how would you do it? >> >> Postfix: I would have two different smtpd daemons - one for the >> local network, one for the external. The external smtpd would have a >> check_sender_access along these lines (thinking out loud here): >> >> check_sender_access = hash:/etc/postfix/reject_from_my_domain >> >> etc/postfix/reject_from_my_domain would have: >> >> example.com 5xx > > How's it different from the "standard" approach - permitting > mynetworks and then rejecting mails "from self"? Two instances of > postfix only make the setup more complicated.
Barely, but I think you're right, that approach works equally well. /Per Jessen, Zürich
