Mail getting into spam within the same domain

[talluricho]

Hi all,
Mails are getting into spam within the same domain.

Scenario:
I have some users, for example user1@example.com and user2@example.com, the problem is when a mail is sent by user1@example.com to user2@example.com, the email is in the junk of user2@example.com in Zimbra Web Client. We are not getting this issue when mails are sent from the same ISP, where the mail server is hosted. We are facing this problem with other ISPs'.

We have posted the FULL HEADERS of the emails also. Below is the FULL HEADER I have included:

Return-Path: user1@example.com
Received: from mail.example.com (LHLO mail.example.com) (196.12.36.222) by
mail.spsoftuk.com with LMTP; Thu, 25 Mar 2010 20:00:06 +0530 (IST)
Received: from localhost (localhost.localdomain [127.0.0.1])
by mail.example.com (Postfix) with ESMTP id 6F65A3250003
for <user2@example.com>; Thu, 25 Mar 2010 20:00:06 +0530 (IST)
X-DSPAM-Result: Whitelisted
X-DSPAM-Confidence: 0.9899
X-DSPAM-Probability: 0.0000
X-DSPAM-Signature: 4bab735f40771116617068
X-DSPAM-Factors: 27,
X-Virus-Scanned: amavisd-new at example.com
X-Spam-Flag: YES
X-Spam-Score: 7.356
X-Spam-Level: *******
X-Spam-Status: Yes, score=7.356 tagged_above=-10 required=6.6
tests=[AWL=-0.171, BAYES_50=0.001, DNS_FROM_OPENWHOIS=1.13,
FH_DATE_PAST_20XX=3.188, HTML_MESSAGE=0.001, MSGID_MULTIPLE_AT=1.449,
RCVD_IN_SORBS_DUL=0.877, RDNS_NONE=0.1,
SHORT_HELO_AND_INLINE_IMAGE=0.781]
Received: from mail.example.com ([127.0.0.1])
by localhost (mail.example.com [127.0.0.1]) (amavisd-new, port 10024)
with ESMTP id ZZRvyTSFxviQ for <user2@example.com>;
Thu, 25 Mar 2010 19:59:51 +0530 (IST)
Received: from user1 (unknown [122.169.132.233])
by mail.example.com (Postfix) with ESMTP id 9A2613250002
for <user2@example.com>; Thu, 25 Mar 2010 19:59:44 +0530 (IST)
From: "user1" <user1@example.com>
To: "'user2'" <user2@example.com>


Tried to solve the problem, but unable to find the solution.

Please help me regarding this. Eagerly waiting for the solution.


Thanks and regards,
Talluricho

[uxbod]

Welcome to the forums

This has been covered many times and a quick check of your headers would have shown :- [SOLVED] FH_DATE_PAST_20XX - Spamassassin bug - incorrect tagging from Jan 1, 2010 on

[ewilen]

And also, covered recently in the forum, DNS_FROM_OPENWHOIS=1.13.

Also in bugzilla: https://bugzilla.zimbra.com/show_bug.cgi?id=45625