[svlug] Problems with mailserver spamming itself due to loop

[Mark]

No, the headers are real.
The problem stops if I block port 25 for IP 127.0.0.1 in iptables.
So it is really the server looping with itself...

I'll try to find relevant entries in the maillog - but it's 1.6Gb, so it will take a little...

MARK
 

> -----Original Message-----
> From: lsc at luke.xen.prgmr.com [mailto:lsc at luke.xen.prgmr.com] 
> On Behalf Of Luke S Crawford
> Sent: Monday, June 02, 2008 2:33 PM
> To: Mark
> Cc: svlug at lists.svlug.org
> Subject: Re: [svlug] Problems with mailserver spamming itself 
> due to loop
> 
> "Mark" <msalists at gmx.net> writes:
> > Hello,
> > 
> > I have a recurring problem with my mailserver redelivering 
> the same email over and over again to itself, until it gets entirely
> > overloaded.
> 
> > Attached below is an email header of one of those emails 
> that shows how the message is looping:
> > 	Received: from smtp2.mydomain.com 
> (localhost.localdomain [127.0.0.1])
> > 	....
> > 	Received: (from root at localhost)
> > 
> > smtp2.mydomain.com and localhost is the machine...
> 
> 
> Paste maillogs;  headers, to some extent, can be faked (though those 
> look legit)  
> 
> I think the most likely problem is that you have some 
> forwarding going on
> (check your .forward files and /etc/aliases to begin with-  
> if you are using
> some new-fangled mail-forward system to be compatable with 
> SPF, I would
> look at that first)    Either that or you have something 
> weird where your 
> submit daemon and the regular daemon disagree on who is the master.  
> 
>