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Re: Weird message header?



on Wed, Dec 27, 2000 at 11:57:54PM +0100, Peczoli Zoltan (pocok@pcdome.hu) wrote:
> Hi,
> 
> > > Envelope-to: somebody@mydomain.com
> > > Received: from [212.108.236.133] (helo=d4t2e9)
> > >         by mydomain.com with smtp (Exim 3.16 #1 (Debian))
> > >         id 149C7D-0000vQ-00
> > >         for <somebody@mydomain.com>; Thu, 21 Dec 2000 21:15:04 +0100
> > > MIME-Version: 1.0
> > > Content-Type: multipart/mixed; boundary="--VE74123GD23SXEF4TEZW167"
> > > Message-Id: <E149C7D-0000vQ-00@mydomain.com>
> > > From: Remote Mail Delivery System <>
> > > Bcc:
> > > Date: Thu, 21 Dec 2000 21:15:04 +0100
> > > Status:   
> > > X-PMFLAGS: 570949760 0 1 P29A60.CNM
> 
> > If you're 212.108.236.133, then yes, it appears you're relaying.  It's
> > the "Received:" lines you want to trace.  I'm finding this to be near
> > s0-mezokovesd.elender.hu.  That you?
> 
> No, it seems like a dial-in user of an ISP. I have no idea who this could
> be. What is the (helo=d4t2e9) part?

That's part of the MTA acknowledgement, I think.  I don't know mail
transfer protocols very well.

> Anyway, my exim config says:
> 
> host_accept_relay = localhost
> 
> so it seems Exim does not relay for anyone except localhost (which in this
> case means mydomain.com)

How do you get your mail -- direct to port 25, or from a POP or IMAP
server someplace?

> > Procmail or specific IP blocks in your MTA.
> 
> Specific IP blocks don't work on dial-in spam, while procmail does its job
> on per-user basis, but a system-wide solution would be better. Am I wrong?

See DUL blocking at RBL.

You haven't defined what your system is, it's hard to give a fix.  Are
you a single box, a network, an ISP, something else?  How many users?
What kind of fix, how secure a block?

-- 
Karsten M. Self <kmself@ix.netcom.com>    http://kmself.home.netcom.com/
 Evangelist, Zelerate, Inc.                      http://www.zelerate.org
  What part of "Gestalt" don't you understand?      There is no K5 cabal
   http://gestalt-system.sourceforge.net/        http://www.kuro5hin.org

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