Alan, > I've seen a marked increase in bad header reports which I paid little > attention to initially but I've just taken some time to look into some > of these as some of the senders are routers, webcams, etc where > previously these were not a problem. > > For the routers I'm seeing missing headers 'date' and 'from' being > reported but looking at the mail the following are present: > > To:r...@clientdomain.com > Subject: Mail Alert from Router > Message-Id: <20100212164654.158a537c...@mx1.mydomain.com> > Date: Fri, 12 Feb 2010 16:46:54 +0000 (GMT) > From: rou...@clientdomain.com > > And from the webcams missing 'date' header: > > From: <custo...@btinternet.com> > To: <custo...@customerdomain.com>,<report...@mydomain.com> > Subject: < WebCam> > MIME-Version: 1.0 > Content-Transfer-Encoding: 7bit > Content-Type: text/plain; charset=us-ascii > Message-Id: <20100212163816.9dbc537c...@mx1.brightheadtechnology.com> > Date: Fri, 12 Feb 2010 16:38:16 +0000 (GMT)
> Unless the mail relay is adding the headers (Postfix), which I haven't > checked yet, I was wondering if others have seen this issue? These missing header fields (along with Message-Id when missing) were probably inserted by your MTA. > While I don't have records, this change in behaviour appeared around the > time I upgraded to amavisd-new-2.6.4-1 on Fedora 10. A likely reason for a change is an upgrade of Postfix. >From its HISTORY file: 20090330 Cleanup: add (Resent-) From:, Date:, Message-ID: or To: headers only when clients match $local_header_rewrite_clients. Specify "always_add_missing_headers = yes" for backwards compatibility. Adding such headers to remote mail can break DKIM signatures that cover headers that are not present. File: cleanup/cleanup_message.c. Mark ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ AMaViS-user mailing list AMaViS-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amavis-user AMaViS-FAQ:http://www.amavis.org/amavis-faq.php3 AMaViS-HowTos:http://www.amavis.org/howto/
