On Sun, 29 Jul 2018 12:28:08 +0200
Antony Stone wrote:
On Sunday 29 July 2018 at 12:17:07, Sebastian Arcus wrote yet another
email that's guaranteed to fail DMARC with a reject when posted
through a mailing list, and consequently I didn't receive:
> Or maybe I am misunderstanding completely what is going on? I've
> uploaded a set of headers here: https://pastebin.com/KDV1f0wW
Given that the example you've posted is from a machine with a public
IP 82.132.242.82, but thinks it has a private IP 10.7.54.227, I'm not
entirely surprised there is no rDNS set up for the private address.
On 29.07.18 18:33, RW wrote:
This is the header:
Received: from 82.132.242.82 (EHLO [10.7.54.227]) ([82.132.242.82])
by smtp409.mail.ir2.yahoo.com (Oath Hermes SMTP Server) with
ESMTPA ID 84be422cfd662692400891131b957bd8 for
<destination.addr...@mydomain.co.uk>; Mon, 23 Jul 2018
13:59:41 +0000 (UTC)
I'm not completely certain what this received header format is
supposed to represent, but SA parses the first field, 82.132.242.82, as
the EHLO/HELO.
Is this is true, this should be the problem. The ehlo here is clearly
[10.7.54.227] and 82.132.242.82 is the (missing) rdns, seen when you compare
to another header you have posted. That would indicate bug in header parsing
code.
Received: from ip70-189-131-151.lv.lv.cox.net (EHLO [192.168.0.105])
([70.189.131.151]) ...
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