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Re: spammers are killing me



* martin f krafft (madduck@madduck.net) [020319 19:48]:
> it's either too late in the night or here's something going on.
> IP=3D195.226.187.154, postfix 1.1.3-1 on debian woody, port 25,
> mailhost for 27 domains, otherwise closed relay.
> 
> now i find this in the logs:
> 
> postfix/smtpd[6023]: connect from host074125.arnet.net.ar [200.45.74.125]
> postfix/smtpd[6023]: 6937F1673D: client=host074125.arnet.net.ar[200.45.74.125]  
> postfix/cleanup[6024]: 6937F1673D: message-id=<0000569d4d9a$000021ce$00002d35@64.197.156.227>
> postfix/qmgr[31979]: 6937F1673D: from=<opt-in@randbad.com>, size=5880, nrcpt=25 (queue active)
> postfix/smtp[6038]: 6937F1673D: to=<kkelsplace@cs.com>, relay=mailin-02.mx.aol.com[64.12.136.121], delay=7, status=sent (250 OK)
> 
> try it, it's a closed relay. there *exists* tls client authentication
> but that would be logged. how the heck can this happen???

FWIW, I did try a very basic relay test and received 554 Relay access
denied, though I don't know if that makes you feel more or less sane =)

It might be worthwhile to get a more thorough probe from orbz.

Do all incoming messages (i.e. legitimately relayed for your customers)
look pretty much like that? I mean they show
relay=some.other.mailserver? I'm thinking maybe it was specified via a
percent-hack or something. Orbz should find that if it is the case. I
haven't used postfix, so I can't say where to look.

good times,
Vineet

-- 
Currently seeking opportunities in the SF Bay Area
Please see http://www.doorstop.net/resume/

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