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I have postfix running as a relay server. In normal configuration, postfix does logging for "from" and "to" header. I would like postfix to log additional extension header eg. X-Mms-Originator-System and X- Mms-3GPP-MMS-Version as example below.

Does anyone have any idea how to log this kind of extension header in postfix?

Best regards, SmileyOpp

Date: Thu, 9 Feb 2012 15:33:09 +0700 (ICT) 
From: +66846462383/TYPE=PLMN 
Sender: +66846462383/TYPE=P...@grxmm4.happy.com 
To: +66815843236/TYPE=PLMN,+66892072043/TYPE=PLMN,+66838471846/TYPE=PLMN,+61434783265/TYPE=PLMN 
Message-ID: <542269348.734.1328776389955.JavaMail.root@mms-cmz-01> 
MIME-Version: 1.0 
Content-Type: multipart/related; type="application/smil"; start="<hISVa>"; .boundary="----=_Part_34_1141875874.1328776389677" 
X-Mms-Originator-System: m...@grxmm4.happy.com 
X-Mms-3GPP-MMS-Version: 6.5.0 
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Actually, Postfix generally won't log the From and To headers from your email content. What it logs are the addresses used in the SMTP Envelope, which may be different. –  mc0e Jan 16 at 15:19

1 Answer 1

You can use a header check with the WARN target, this will log your header.

## main.cf
header_checks = regexp:/etc/postfix/header_checks

## header_checks
/^ X-Mms-Originator-System: / WARN 

should work

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