--On 13 February 2012 10:17:21 -0600 Noel Jones <njo...@megan.vbhcs.org>
wrote:
And if you mangle the Received: header, you should rename it to
X-Received: to keep spam scanners from penalizing you for an invalid
header.
I'm not 100% convinced that is the right approach. If I send mail
to the final MTA without a Received: header on at all (i.e. only
an X-Received: header), I think it might get penalised because of that.
It looks like it's come from an MUA. I think I might be better making
it appear that it has come from 127.0.0.1, i.e.
Received: from [10.10.10.10] (10-10-10-10.example.com [10.10.10.10])
by mail.example.com (Postfix) with ESMTPSA id D74CF456E001;
Sat, 11 Feb 2012 18:35:40 +0000 (GMT)
turns into:
Received: from [127.0.0.1] (localhost [127.0.0.1])
by mail.example.com (Postfix) with ESMTPSA id D74CF456E001;
Sat, 11 Feb 2012 18:35:40 +0000 (GMT)
I note that gmail appears to insert a Received: line with out
a "from" element, so I can't imagine any penalty will be significant.
--
Alex Bligh
