I have a daily email that comes in to one user in which the headers of the email contain a blank line. This is causing mail clients/webmail to display "Invalid address" "Unknown date" and no subject. When I analyze the headers at mxtoolbox I'm able to remove the blank line and all the information gets displayed properly. Typically I would just let the user know that the sender needs to fix the headers in this automatically generated email but they've tested with external mail providers (gmail, yahoo, etc) and the information that is missing from the server I manage gets displayed properly on these other providers. I've searched around a little and either I haven't found an answer for how to get Postfix to ignore this blank line or I'm not understanding what I need to do.
Is there a setting somewhere I can adjust or anything that I can do on my end to deal with these blank lines in the header? Here are the headers causing the problem:
Return-Path: <xxx@xxx.com>
X-Original-To: yyy@yyy.com
Delivered-To: yyy@yyy.com
Received: from aaa.bbb.ccc.net (aaa.bbb.ccc.net [1.2.3.4])
by ddd.eee.net (Postfix) with ESMTPS id E794FA0D80
for <yyy@yyy.com>; Mon, 26 Aug 2019 09:20:52 -0500 (CDT)
Authentication-Results: ddd.eee.net;
spf=none (sender IP is 1.2.3.4) smtp.mailfrom=zzz@zzz.com smtp.helo=aaa.bbb.ccc.net
Received-SPF: none (ddd.eee.net: no valid SPF record)
Received: from ZZZ ([5.6.7.8])
by :SMTPAUTH: with ESMTPA
id 2FrYiJmwHSd922FrYiuWeV; Mon, 26 Aug 2019 07:20:52 -0700
X-Sender: zzz@zzz.com
Sent Date: 8/26/2019 9:20:52 AM
From: "ZZZ" <aaa@aaa.com>
Subject: XXXX
To: yyy@yyy.com
Content-Type: multipart/mixed; boundary="gr55wSFzBdfryST3lATLMCuIGHiYB=_Y1r"
MIME-Version: 1.0
Reply-To: "ZZZ" <zzz@zzz.com>
Date: Mon, 26 Aug 2019 09:20:52 -0500
X-CMAE-Envelope: MS4wfFtIBmWvnzKW8FZldCXQTnRrNs1/ipatxzl4/hx3OnHZrpXqST8o8g8A1UyVUbWDC6J4KGR/NS9qqskutLJqJvorLFbLQRGFKgl08uLmnXVsktqvD4barOrXXsyzXFiyqc26910WAlGk0x1WVgMGX8SDtGRy/ZnSe/mqL3tDP6Yjsejw8C2JZZFU1tsMvs4SHgWrohLeqDCN6YcEVOaxn10=
