After update to 11.0.9 our mails are classified as spam

[bigfrog]

Hello,

after the update to 11.0.9 from 10.4 mails from or server are classified as spam by Google and others.
I have no idea, but it's exactly after the update that this happens. This applies to all our mail users, not only some of them. Must be something on our server. Google reports: "It's similar to messages that have been detected by our spam filters.". As far as I could check our server is not listed as spamhost.

Maybe one of the experts here has a clue from the mail headers that I provide here:


Delivered-to: serveradmin@n******.de
Received: by 10.114.18.142 with SMTP id w14csp22963ldd; Wed, 22 Aug 2012 05:14:32 -0700 (PDT)
Received: by 10.204.133.194 with SMTP id g2mr6237716bkt.13.1345637672576; Wed, 22 Aug 2012 05:14:32 -0700 (PDT)
Return-path: <Rainer@ast*********.de>
Received: from h1980300.stratoserver.net (h1980300.stratoserver.net. [85.214.200.27]) by mx.google.com with ESMTPS id c13si2333688bkw.45.2012.08.22.05.14.32 (version=TLSv1/SSLv3 cipher=OTHER); Wed, 22 Aug 2012 05:14:32 -0700 (PDT)
Received-spf: neutral (google.com: 85.214.200.27 is neither permitted nor denied by best guess record for domain of Rainer@ast********.de) client-ip=85.214.200.27;
Authentication-results: mx.google.com; spf=neutral (google.com: 85.214.200.27 is neither permitted nor denied by best guess record for domain of Rainer@ast*********.de) smtp.mail=Rainer@ast*******.de
X-no-relay: not in my network
Received: from [192.168.10.101] (93.Red-79-145-35.dynamicIP.rima-tde.net [79.145.35.93]) by h1980300.stratoserver.net (Postfix) with ESMTPSA id 892FF86A3A0 for <serveradmin@n*****.de>; Wed, 22 Aug 2012 14:14:31 +0200 (CEST)


Rainer@ast*********.de is a mail account on our server.

One thing I noticed: Before the update, the server was using the secondary IP address 81.169.137.14 for SMTP, for any reason this changed after the update. This is the only thing that makes sense for me that is has s.th. to do with it.

Greets and thanks ion advance.

bigfrog

 

[Daniel H]

you should check:

1. your spf records of your domain
2. check, if you use the correct sender in the mail (a sender from YOUR domain)
3. you should give more info about the mail header - when possible, post it complete!!
4. And do you use Domainkeys / DKIM for your domain?

is it possible, to get more infos, why the mails are classified as spam - e.g. Spamassassin Header??

 

[bigfrog]

Hi Daniel

you should check:

1. your spf records of your domain
2. check, if you use the correct sender in the mail (a sender from YOUR domain)
3. you should give more info about the mail header - when possible, post it complete!!
4. And do you use Domainkeys / DKIM for your domain?

is it possible, to get more infos, why the mails are classified as spam - e.g. Spamassassin Header??

1. We dont use spf. From the gmail header: Received-spf: neutral
2. What do you mean, we have >10 domains that use email. Or do you refer to the hostname of the server?
like this:
Received: from h1980300.stratoserver.net (h1980300.stratoserver.net. [85.214.200.27])

3. without the "*"? The rest of the header is not important I think, its just fetching to my
local client from the gmail server: (schmerle is my local PC, sniksnok a fantasy (local) domain)
....
Message-id: <[email protected]>
Subject: guten tag
From: Rainer <Rainer@ast*********.de>
To: serveradmin@n*****.de
Date: Wed, 22 Aug 2012 13:14:31 +0100
Content-type: text/plain; charset="UTF-8"
X-mailer: Evolution 3.2.2-
Content-transfer-encoding: 8bit
Mime-version: 1.0
X-evolution-source: 1302539537.6135.1@schmerle

4. no

5. I really don't know, thats why I'm here. Mails to gmail accounts and to stratomail accounts go to the spamfolder. They don't exactly tell why. But before the update all was OK! Maybe someone has a mailserver with spamassassin running that I can send a mail to for testing?

regards