[Gllug] FQDN for local mail relay?

Garry Heaton garry at heaton6.freeserve.co.uk
Tue Dec 19 01:32:07 UTC 2006


Mike Brodbelt wrote:
> The problem here is that despite your mail being tehnically OK, spam is 
> now so problematic that there are a lot of people who'll reject mail with
> dubious domains in "From" headers.
> 
> IMHO, the best option these days is to have a machine with a public IP 
> and correct forward and reverse DNS. Send mail direct, and then make sure
> your machine announces the correct DNS name in the HELO/EHLO stage of the
> SMTP/ESMTP transaction.
> 
> Failing that, if you have to relay, make sure your MTA rewrites the 
> "From" header and the envelope sender address to a genuine, deliverable 
> email address at your domain. That should also work. Do a packet trace 
> when you're sending an outbound email so you can see the entire SMTP 
> conversation - that way it'll be obvious if something isn't being 
> rewritten properly.
> 
> Mike
> 

Which "From:" header are you suggesting needs rewriting?
'robinsonengineers.co.uk' is a legit domain and is hosted for the company by
BT, the same company accepting the relay. OK, we're not using it for the
server's hostname but it's certainly legit for delivery.

*******************************************************************
Received: from robinson.local (host217-36-210-11.in-addr.btopenworld.com
[217.36.210.11])
	by c2bthomr07.btconnect.com
	with ESMTP id BNR56131;
	Mon, 18 Dec 2006 16:45:13 GMT
Received: from [127.0.0.1] (laptop [192.168.1.4])
	by robinson.local (Postfix) with ESMTP id 955721F7C159
	for <garry at usableit.co.uk>; Mon, 18 Dec 2006 16:54:04 +0000 (GMT)
Message-ID: <4586CB75.6020007 at robinsonengineers.co.uk>
Date: Mon, 18 Dec 2006 17:10:13 +0000
From: Mark Robinson <mark.robinson at robinsonengineers.co.uk>
User-Agent: Thunderbird 1.5.0.8 (Windows/20061025)
MIME-Version: 1.0
To: garry at usableit.co.uk
Subject: Hi from Mark Robinson
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Garry
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