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Forums > General Discussion Forums > Error Code Discussion and DNS Issues
Subject: Messages reported as SPAM? Invalid Date: header (not RFC 2822)
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mrsumovic

Posts: 5
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ArGoNuke Recruit
ArGoNuke Recruit
07-13-2007 4:32 AM  
Hi!

I use Mail server and Mail Filter, both latest versions.

Everything is working fine, but yesterday I received message from important client who said that our mail server is sending messages which their system recognizes as spam. Here you can see what they wrote (part of log):

*  2.2 INVALID_DATE Invalid Date: header (not RFC 2822)
 *  0.5 EXTRA_MPART_TYPE Header has extraneous Content-type:...type= entry
 * -0.0 SPF_HELO_PASS SPF: HELO matches SPF record
 *  0.8 DATE_IN_PAST_06_12 Date: is 6 to 12 hours before Received: date
 *  1.8 HTML_IMAGE_ONLY_24 BODY: HTML: images with 2000-2400 bytes of
 words
 *  0.2 HTML_MESSAGE BODY: HTML included in message
 *  0.0 BAYES_50 BODY: Bayesian spam probability is 40 to 60%
 *      [score: 0.4942]

It is obvious that they use SpamAssasin, but I don't know why is this happening.

What is this INVALID_DATE Invalid Date: header (not RFC 2822)? Is this server or client generated?

How can I fix this?

Thanks in advance!
roland
Forum Moderator

Posts: 1073
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ArGoNuke Captain
ArGoNuke Captain
07-13-2007 5:15 AM  
» RFC 2822 formatted date Example: Thu, 21 Dec 2000 16:01:07 +0200

It is generated by ArGo or MailFilter, if you relay directly through MailFilter.

I never have noticed that ArGo creates invalid/not RFC 2822 compliant date headers.

Would be interesting if this guy sends you the source of the email. Please post the header here.

-Roland
mrsumovic

Posts: 5
Online: User is Offline
ArGoNuke Recruit
ArGoNuke Recruit
07-13-2007 7:03 AM  
I hope that will help. This is heder of message sent between two local users.


Received: from  ⎖.1.3.64] by mail.deltagenerali.co.yu with SMTP (HELO arnenad)
  (ArGoSoft Mail Server Pro for WinNT/2000/XP, Version 1.8 (1.8.9.1)); Fri, 13 Jul 2007 12:58:36 +0200
Message-ID: <002101c7c53c$a81de6b0$4003010a@delos2>
From: "NM" <**@**.co.yu>
To: "MR" <**@**.co.yu>
Subject: Test
Date: Fri, 13 Jul 2007 12:57:49 +0200
MIME-Version: 1.0
Content-Type: multipart/related;
    type="multipart/alternative";
    boundary="----=_NextPart_000_001D_01C7C54D.6A81BEB0"
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 6.00.2900.3028
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3028
Return-Path: <**@**.co.yu>
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Forums > General Discussion Forums > Error Code Discussion and DNS Issues > Messages reported as SPAM? Invalid Date: header (not RFC 2822)


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