Date: Thu, 21 Apr 2011 13:04:24 -0400 From: Gary Palmer <gpalmer@freebsd.org> To: Paul Blazejowski <paulb@blazebox.homeip.net>, Robert Simmons <rsimmons0@gmail.com>, freebsd-security <freebsd-security@freebsd.org> Subject: Re: bad email address Message-ID: <20110421170424.GC73035@in-addr.com> In-Reply-To: <20110421123447.GD4543@straylight.ringlet.net> References: <BANLkTi=MhGVSBhb52PCop%2Bo-75iT3FA6oA@mail.gmail.com> <20110420212354.GB73035@in-addr.com> <20110421042639.GB91477@DataIX.net> <BANLkTi=vAK9LU=PQ0gULuPu4rQ7eRXL1bw@mail.gmail.com> <1303360894.3063.1.camel@blaze.homeip.net> <20110421123447.GD4543@straylight.ringlet.net>
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On Thu, Apr 21, 2011 at 03:34:47PM +0300, Peter Pentchev wrote: > On Thu, Apr 21, 2011 at 12:41:34AM -0400, Paul Blazejowski wrote: > > doesn't mailman unsubscribe an email automatically after a couple of > > bounces? unless freebsd list is not configured to do so... > > That's only if the bounce message reaches mailman. In this case, > the culprit is a mail bouncing agent (MBA? ;) which addresses > the bounce to the original sender (the one from the From header) > instead of *any* of the other possible addresses present in > mailman-generated messages that would do the right thing. RFCs say bounces have to go to the envelope sender. MailMan correctly changes the envelope sender of mail to freebsd-security to owner-freebsd-security@freebsd.org so that it can see the NDRs (non-delivery reports). However some broken software boucnes to the From address in the header. Since the From address in the header is *not* MailMan it cannot auto-unsubscribe the bouncing user. If the bouncing users MTA/MUA doesn't follow specifications there isn't a lot MailMan can do Anyway, back to your scheduled discussion of FreeBSD security issues Gary
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