> On Mon, 14 Feb 2011, Simon Matter wrote: >> The problem is that those messages really have invalid from adresses, >> like >> "RosaSánchez@xxxxxxxxxxxxx", but Postfix still accepts them. Later, >> Cyrus >> runs parseaddr() on it ans correctly refuses to accept the mail. > > Yeah, postfix really should reject that crap. Do you know which MUA is > producing this braindamage? I think those mails are mainly spam, so the MUA is some kind of spam tool I guess. > >> Now, I'm interested to hear how others handle this case, if possible how >> they handle it with postfix. I know that enabling >> strict_rfc821_envelopes >> would possibly help but that seem to be a bad idea. > > The problem with strict_rfc821_envelopes is that it also requires one to > actually speak rfc2821, so "MAIL FROM: whomever@xxxxxxxxxxx" would cause a > rejection. > > There is the heavy-handed "smtpd_command_filter", though. It is certainly > capable of doing what you need. My first idea was to use header_checks to check the From: Reply-To: and Return-Path: headers but you are right, that's not enough. I'm still wondering why those messages go through. Maybe I care too much :) Simon ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
