[Reportbug-maint] Bug#640191: RFC 2822 compliancy - message bounced by gmail

[Redalert Commander]

Hi,

I am subscribed to debian-mentors, this list receives e-mails from the
bugtracking system. This is the second time now that I received a
message from listmaster that an e-mail has been bounced.

The x-mailer field refers to reportbug 6.4.4 (currently in stable,
testing and unstable), google complains about duplicate 'To' fields.
Looking into the message I see this (the sender has been changed by me):

From: Some User <someuser at example.com>
To: Debian Bug Tracking System <submit at bugs.debian.org>
From: "Some User" <someuser at example.com>
To: submit at bugs.debian.org

Clearly this isn't correct.

Full error message from google on this:
"""
Final-Recipient: rfc822; redalert.commander at gmail.com
Action: failed
Status: 5.7.1
Remote-MTA: dns; gmail-smtp-in.l.google.com
Diagnostic-Code: smtp; 550-5.7.1 [2001:41b8:202:deb:216:36ff:fe40:4002      11]
    Our system has detected 550-5.7.1 that this message is not RFC 2822
    compliant. To reduce the amount of 550-5.7.1 spam sent to Gmail, this
    message has been blocked. Please review 550 5.7.1 RFC 2822 specifications
    for more information. h48si8087895eey.92 - gsmtp
"""

Debian's own amavis scanner reports the following:
X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "From"

Regards,
Steven