nanog mailing list archives

Re: UltraDNS mail admin around?


From: "Chris Lewis" <clewis () nortel com>
Date: Wed, 08 Oct 2008 13:18:16 -0400

Randy Bush wrote:
Randy Bush wrote:
Andrey Gordon wrote:
I'm getting bombarded by these

Received: from 80.224.33.155.static.user.ono.com ([80.224.33.155])by
    mxb2eqsj.ultradns.net with esmtp (Exim 4.43)id 1J7YZc-0007qU-4ifor
    mason_johnn () i2c com; Wed, 26 Dec 2007 15:53:36 +0000
Message-ID: <000701c847d7$0379bd21$79a237a3@muffejda>
From: "Handbags" <andrzej () myrealbox com>
To: "Replica Watches" <mason_johnn () i2c com>

was ultra really the next hop?

Either Ultradns is Andrey's mail server, or he appears to have left out
his perimeter's Received line.  More likely the latter.  Without seeing
the final received line, can't tell whether this really went thru UltraDNS.

Many BOTS forge headers.  It's not at all unusual to see:

Received: from a by b (b is my server)
Received: from c by d

where d != a.  Meaning the second Received line is entirely fabricated.



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