North American Network Operators Group

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Re: UltraDNS mail admin around?

  • From: Chris Lewis
  • Date: Wed Oct 08 13:18:55 2008

Randy Bush wrote:
> Randy Bush wrote:
>> Andrey Gordon wrote:
>>> I'm getting bombarded by these
>>> Received: from ([])by
>>> with esmtp (Exim 4.43)id 1J7YZc-0007qU-4ifor
>>>     [email protected]; Wed, 26 Dec 2007 15:53:36 +0000
>>> Message-ID: <[email protected]>
>>> From: "Handbags" <[email protected]>
>>> To: "Replica Watches" <[email protected]>

> 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.