I have noticed that many spam headers contain a "Received From:" line with
conflicted ip addresses.  I had thought this line was supposed to show

RECEIVED FROM: some_domain.cx [ip of domain]

However I have many that look like this:

Received: from 64.119.218.151.nnt6us.com [64.119.218.151] by mail

Where 64.119.218.151.nnt6us.com resolves like this:

Non-authoritative answer:
Name:    64.119.218.151.nnt6us.com
Address:  64.119.221.137

If this is some effort to hide the origin of the message could we possibly
use it to better ID the message as spam?

Rob Salmond
Ontario Die Company
(519)-576-8950 ext. 132


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