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Re: BUG #5012: mailing list VERP addresses not sender-verifiable

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Greg Stark <gsstark(at)mit(dot)edu>
Cc: Gergely Czuczy <gergely(dot)czuczy(at)harmless(dot)hu>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #5012: mailing list VERP addresses not sender-verifiable
Date: 2009-08-26 20:55:18
Message-ID: 20090826205518.GR5065@alvh.no-ip.org (view raw or flat)
Thread:
Lists: pgsql-bugs
Greg Stark wrote:
> On Wed, Aug 26, 2009 at 7:59 PM, Gergely
> Czuczy<gergely(dot)czuczy(at)harmless(dot)hu> wrote:
> > AFAIK exim generates a bounce to test the address, and for that I'm
> > getting a reject saying that the user is unknown for the VERP address.
> >
> > Aug 26 04:02:05 hostname exim[70819]: H=mx1.hub.org
> > [200.46.208.106] sender verify fail for <pgsql-announce-owner+M1580=phoemix=harmless(dot)hu(at)postgresql(dot)org>: response
> > to "RCPT
> > TO:<pgsql-announce-owner+M1580=phoemix=harmless(dot)hu(at)postgresql(dot)org>"
> > from mx1.hub.org [200.46.208.106] was: 550 5.1.1
> > <pgsql-announce-owner+M1580=phoemix=harmless(dot)hu(at)postgresql(dot)org>:
> > Recipient address rejected: User unknown in relay recipient table
> 
> That's odd. When I tested it I got a 450 greylist. That causes the
> mailer to hold the email and then resend again later. My email didn't
> have the "=foo=bar.baz" component though, just +M0000.

I got a 450 greylist on mx2.hub.org but a hard error on mx1.hub.org.
Which one did you try?  Note that there's also maia-1.hub.org or
something like that.  I'm not sure what's each server; weird crap from
hub.org I guess.  I tried an address without the =foo=bar.baz part too;
I think Majordomo uses different patterns depending on whether the
sender is subscribed, or something like that; but they should both work.

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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