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

From: Gergely Czuczy <gergely(dot)czuczy(at)harmless(dot)hu>
To: Greg Stark <gsstark(at)mit(dot)edu>
Cc: pgsql-bugs(at)postgresql(dot)org, Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Subject: Re: BUG #5012: mailing list VERP addresses not sender-verifiable
Date: 2009-08-26 18:27:04
Message-ID: 20090826202704.00002030@unknown (view raw or flat)
Thread:
Lists: pgsql-bugs
Hello,

okey, i've removed the check for postgresql.org.

OTOH, may I ask how does VERP work at all for the mailing list, if the
returning mails are not handled? Just interested.

On Wed, 26 Aug 2009 17:43:17 +0100
Greg Stark <gsstark(at)mit(dot)edu> wrote:

> On Wed, Aug 26, 2009 at 7:29 AM, Gergely
> Czuczy<gergely(dot)czuczy(at)harmless(dot)hu> wrote:
> >
> > The following bug has been logged online:
> >
> > Bug reference:      5012
> > Logged by:          Gergely Czuczy
> > Email address:      gergely(dot)czuczy(at)harmless(dot)hu
> > PostgreSQL version: 8.4
> > Operating system:   FreeBSD
> > Description:        mailing list VERP addresses not
> > sender-verifiable Details:
> 
> This is not a Postgres bug. I would say to please use an appropriate
> channel but, uh, our mailing list maintainers don't really have a good
> channel for reporting such problems :(
> 
> In any case you should disable SAV. It is well documented to cause
> such problems and is likely to get you banned if you use it on a site
> which receives any significant amount of email from one place (such as
> Postgres lists!).
> 
> c.f.
> 
> http://taint.org/2007/03/16/134743a.html
> http://www.circleid.com/posts/sender_address_verification/
> 
> Fwiw the addresses used in the VERP are not blocked, they're
> greylisted. I suspect that is a mistake and they shouldn't be but
> there's nothing inherently wrong with it the way it is and your SAV
> implementation is just broken. Arguably the very concept of SAV is
> broken though.
> 
> 



-- 
Üdvözlettel / Sincerely,
Gergely CZUCZY

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