Zimbra Collaboration Suite 7.1
Debian 6.0

Not sure whats going on, sent a test email to AOL, Yahoo, Gmail, and Hotmail;
Yahoo = spam
AOL = inbox
Gmail = spam
Hotmail = inbox

I check a general site for black listing and none were found the ip checks out okay...

On all emails;
DKIM = Pass
SPF = Pass

host 24.172.204.102
PHP Code:
102.204.172.24.in-addr.arpa domain name pointer rrcs-24-172-204-102.central.biz.rr.com
nslookup 24.172.204.102
PHP Code:
Server:         65.24.0.168
Address
:        65.24.0.168#53

Non-authoritative answer:
102.204.172.24.in-addr.arpa     name rrcs-24-172-204-102.central.biz.rr.com.

Authoritative answers can be found from
Spam message info from gmail;
PHP Code:
Delivered-Touser@gmail.com
Received
by 10.68.40.100 with SMTP id w4csp95107pbk;
        
Thu19 Jul 2012 11:11:34 -0700 (PDT)
Receivedby 10.42.158.10 with SMTP id f10mr1875005icx.51.1342721494122;
        
Thu19 Jul 2012 11:11:34 -0700 (PDT)
Return-
Path: <user@aeccmd.org>
Receivedfrom aeccmd.org (rrcs-24-172-204-102.central.biz.rr.com. [24.172.204.102])
        
by mx.google.com with ESMTP id ac6si4191398igc.12.2012.07.19.11.11.33;
        
Thu19 Jul 2012 11:11:33 -0700 (PDT)
Received-SPFpass (google.comdomain of user@aeccmd.org designates 24.172.204.102 as permitted senderclient-ip=24.172.204.102;
Authentication-Resultsmx.google.comspf=pass (google.comdomain of user@aeccmd.org designates 24.172.204.102 as permitted sendersmtp.mail=user@aeccmd.orgdkim=pass header.i=@aeccmd.org
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from localhost (localhost.localdomain [127.0.0.1])
    
by aeccmd.org (Postfixwith ESMTP id 4B65E1F203F
    
for <user@gmail.com>; Thu19 Jul 2012 14:11:32 -0400 (EDT)
DKIM-Signaturev=1a=rsa-sha256c=simple/simpled=aeccmd.orgs=default;
    
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     OzM8FVm1yt9LYTYp7hNM3Yo
//FqEVnce5zh8ivjsnP9ANPK2u3FhTwiU3T3+OjSLFx
     
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X-Virus-Scannedamavisd-new at aeccmd.org
Received
from aeccmd.org ([127.0.0.1])
    
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with ESMTP id 3tQFFkvXZp0f for <user@gmail.com>;
    
Thu19 Jul 2012 14:11:29 -0400 (EDT)
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by aeccmd.org (Postfixwith ESMTP id 85AAA1F203D
    
for <user@gmail.com>; Thu19 Jul 2012 14:11:29 -0400 (EDT)
DateThu19 Jul 2012 14:11:29 -0400 (EDT)
Fromuser <user@aeccmd.org>
Touser@gmail.com
Subject
Triathlon
Message
-ID: <7462a586-5640-4f5c-86e7-9beb94962b5c@aeccmd.org>
Content-Typemultipart/alternative;
 
boundary="=_8eecf122-5eac-4bb0-91bb-c52285236523"
MIME-Version1.0
X
-MailerZimbra 7.1.3_GA_3346 (ZimbraWebClient FF3.0 (Win)/7.1.3_GA_3346