[Dovecot] Received header only showing localhost

[Matt Devaney]

Hi all,

I’m a new dovecot user and a first-time poster so please forgive me if this
is a stupid question, or even (as I suspect it might be) not really a
Dovecot question.

My system is the fairly typical mix of postfix, amavis-new, and Dovecot. For
some reason I’ve noticed that when I look at the mail headers for delivered
messages the Received header is missing the detail of any external servers
that the mail went through, and additionally the tag appears twice; for
example the ‘Welcome to the dovecot mailing list’ email has:

Received: from localhost (localhost [127.0.0.1])
    by droplet.the-wyvern.net (Postfix) with ESMTP id DDDD163F73
    for <myname at mydomain.net>; Mon, 26 Aug 2013 16:40:19 +0000 (UTC)

Received: from droplet.the-wyvern.net ([127.0.0.1])
    by localhost (droplet.the-wyvern.net [127.0.0.1]) (amavisd-new, port
10024)
    with ESMTP id 6AFMiG0TAHUv for <myname at mydomain.net>;
    Mon, 26 Aug 2013 16:40:17 +0000 (UTC)

Searching through the dovecot.markmail archive I can see this doesn’t seem
to be too unusual in that there are other examples where folk have posted
message headers with the above format, however I’m wondering if there’s a
good reason for it and if I can turn it off? I quite like being able to see
where my mail came from :)

If there’s a man / wiki page to read somewhere that explains it then please
feel free to tell me to RTM (.. long as you also point me in the right
direction :p )

Thanks,
Matt