Mails sent by redmine received as SPAM.


Hello,

My environnment is :
<pre>
Environment:
  Redmine version                          2.3.0.stable.11711
  Ruby version                             1.9.3 (i586-linux)
  Rails version                            3.2.13
  Environment                              production
  Database adapter                         Mysql2
</pre>

1 - when I set up "Emission email address" with : 
<pre>
Ticket System <DoNotReplys@mydomain.com>
</pre>
 emails are detected as spam.
2 - If I set up "Emission email address" with only 
<pre>
<DoNotReplys@mydomain.com>
</pre>
again emails are detected as spam.
3 - *But* when I set up "Emission email address" with
<pre>
DoNotReplys@mydomain.com
</pre>
emails are not yet considered as spam !

The problem is viewable in email headers. Here headers of each case, have a look at List-Id's attribut, There is the problem :

1 -
<pre>
X-Original-Source-IP: x.x.x.x (my mailserver public ip)
 Received: from localhost (localhost [127.0.0.1])
         by mailserver.mydomain.com (Postfix) with ESMTP id 6FD9F549E6;
         for <me@otherdomain.com>; Fri, 23 Aug 2013 12:20:08 +0200 (CEST)
 Received: from mailserver.mydomain.com ([127.0.0.1])
         by localhost (mailserver.mydomain.com [127.0.0.1]) (amavisd-new, port 10024)
         with ESMTP id Fxy+zGjqNAQ4; Fri, 23 Aug 2013 12:20:08 +0200 (CEST)
 Received: from mydomain.com (unknown [172.26.1.58])
         by mailserver.mydomain.com (Postfix) with ESMTP id 01A79549B6;
         Fri, 23 Aug 2013 12:20:07 +0200 (CEST)
 references: <redmine.issue-194.20130823101811@mydomain.com>>
 X-Redmine-Project: MyProject
 X-Redmine-Issue-Id: 194
 X-Redmine-Issue-Author: me
 X-Redmine-Issue-Assignee: me
 X-Redmine-Sender: me
 X-Redmine-Host: redmine.mydomain.com
 X-Redmine-Site: IT-Ticketing
 X-Auto-Response-Suppress: OOF
 Auto-Submitted: auto-generated
 List-Id: <Ticket System <DoNotReplys@mydomain.com>>
</pre>

2 -
<pre>
X-Original-Source-IP: x.x.x.x (my mailserver public ip)
 Received: from localhost (localhost [127.0.0.1])
         by mailserver.mydomain.com (Postfix) with ESMTP id 73864549A7
         for <me@otherdomain.com>; Fri, 23 Aug 2013 14:32:03 +0200 (CEST)
 Received: from mailserver.mydomain.com ([127.0.0.1])
         by localhost (mailserver.mydomain.com [127.0.0.1]) (amavisd-new, port 10024)
         with ESMTP id U9Px2lA+VctL; Fri, 23 Aug 2013 14:32:03 +0200 (CEST)
 Received: from mydomain.com (unknown [172.26.1.58])
         by mailserver.mydomain.com (Postfix) with ESMTP id EF6065459C;
         Fri, 23 Aug 2013 14:32:02 +0200 (CEST)
 X-Redmine-Project: MyProject
 X-Redmine-Issue-Id: 196
 X-Redmine-Issue-Author: me
 X-Redmine-Issue-Assignee: me
 X-Redmine-Sender: me
 X-Redmine-Host: redmine.mydomain.com
 X-Redmine-Site: IT-Ticketing
 X-Auto-Response-Suppress: OOF
 Auto-Submitted: auto-generated
 List-Id: <<DoNotReplys@mydomain.com>>
</pre>

3 -
<pre>
X-Original-Source-IP: x.x.x.x (my mailserver public ip)
 Received: from localhost (localhost [127.0.0.1])
         by mailserver.mydomain.com (Postfix) with ESMTP id BA231549F5
         for <me@otherdomain.com>; Fri, 23 Aug 2013 14:35:32 +0200 (CEST)
 Received: from mailserver.mydomain.com ([127.0.0.1])
         by localhost (mailserver.mydomain.com [127.0.0.1]) (amavisd-new, port 10024)
         with ESMTP id 2DojDXXzaejX; Fri, 23 Aug 2013 14:35:32 +0200 (CEST)
 Received: from mydomain.com (unknown [172.26.1.58])
         by mailserver.mydomain.com (Postfix) with ESMTP id 60E2154639;
         Fri, 23 Aug 2013 14:35:32 +0200 (CEST)
 References: <redmine.issue-196.20130823123202@mydomain.com>
 X-Redmine-Project: MyProject
 X-Redmine-Issue-Id: 196
 X-Redmine-Issue-Author: me
 X-Redmine-Issue-Assignee: me
 X-Redmine-Sender: me
 X-Redmine-Host: redmine.mydomain.com
 X-Redmine-Site: IT-Ticketing
 X-Auto-Response-Suppress: OOF
 Auto-Submitted: auto-generated
 List-Id: <NePasRepondre@mydomai.com>
</pre>


So, how can I set up "Emission email address" like : Do not reply <sytem@mydomain.com> ?