dovecot - May 2014 - LMTP hostname ignoring ENV variables

I am having an issue with LMTP appending the local hostname to received mail
from Postfix. I either want to append localhost, a custom string, or nothing at
all. Looking through the source code, I believe I should be able to set
"export DOVECOT_HOSTNAME" and "export DOVECOT_HOSTDOMAIN" in
my initscript to override the hostname set in lmtp/commands.c,
client_get_added_headers()

I'm using Centos 5; my hostname is mailtest1.atest.qq -- it is not defined
in /etc/hosts.

The added header is below:


??? Received: from mail.mailorxyz.de
?????? ??? by mailtest1.atest.qq (Dovecot) with LMTP id sreUK1+sfFOseQAAPYI4hw
?????? ??? for <admin at mailorxyz.de>; Wed, 21 May 2014 13:39:03 +0000
??? Received: by mail.mailorxyz.de (Postfix, from userid 97)
?????? ??? id CC743116AB5; Wed, 21 May 2014 13:39:03 +0000 (UTC)

I have the following defined in /etc/init.d/dovecot:


export DOVECOT_HOSTDOMAIN=dovecot.mailorxyz.de
export DOVECOT_HOSTNAME=dovecot.mailorxyz.de


Am I missing something or did I misunderstand the source code?

Thanks.

* G H <uothrawn at yahoo.com> 2014.05.21 17:02:
> ??? Received: from mail.mailorxyz.de
> ?????? ??? by mailtest1.atest.qq (Dovecot) with LMTP id
sreUK1+sfFOseQAAPYI4hw
> ?????? ??? for <admin at mailorxyz.de>; Wed, 21 May 2014 13:39:03
+0000
> ??? Received: by mail.mailorxyz.de (Postfix, from userid 97)
> ?????? ??? id CC743116AB5; Wed, 21 May 2014 13:39:03 +0000 (UTC)
It can be set in 15-lda.conf:

# Hostname to use in various parts of sent mails (e.g. in Message-Id) and
# in LMTP replies. Default is the system's real hostname at domain.
#hostname 
Regards
Thomas
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