Exchange Server 2013 does not deliver mail as they arive.

I need Help and guidance on this problem. I have installed Exchange server 2013 with SP1 on Server 2012. Install Went perfect no error. It on a server with 2 TB storage. 16G
memory. Exchange 2013 is the only application running on the box. DNS service is also running on the box. I can see the mail arrive in the mail Box Queue with the Queue Viewer and they would just sit there and then after a 15 to 30 min delay it release the
mail to the mail boxes. The only error or warning I am seeing in the logs are the 6002 warning. Any suggestion would be greatly appreciated.

Please share message header of one of the delayed message. It will help to narrow down the issue.
Do you see any connection failures in connectivity logs.
Do you have multiple 2013 servers in your exchange environment ?
Lets fix it.
Received: from Xchngsvr.A.com (xxx.xxx.xxx.xxx) by Xchngsvr.a.com
 (xxx.xxx.xxx.xxx) with Microsoft SMTP Server (TLS) id 15.0.847.32 via Mailbox
 Transport; Fri, 25 Apr 2014 13:31:33 -0400
Received: from Xchngsvr.a.com (xxx.xxx.xxx.xxx) by Xchngsvr.a.com
 (xxx.xxx.xxx.xxx) with Microsoft SMTP Server (TLS) id 15.0.847.32; Fri, 25 Apr
 2014 12:30:44 -0400
Received: from xchngsvr.a.com (xxx.xxx.xxx.xxx) by Xchngsvr.a.com
 (xxx.xxx.xxx.xxx) with Microsoft SMTP Server id 15.0.847.32 via Frontend
 Transport; Fri, 25 Apr 2014 12:30:37 -0400
Received: from mia0vm-cass03.colo.sonicwall.com ([208.17.117.5])        
by
 xchngsvr.a.com (SonicWALL 7.4.5.1391)               
with ESMTP id 201404251630370000228;
 Fri, 25 Apr 2014 12:30:38 -0400
Received: from mail1.fieldsolutions.com ([98.129.95.107])           
by
 mia0vm-cass03.colo.sonicwall.com (SonicWALL 7.4.4.8439)        
with ESMTP id
 201404251631070343409; Fri, 25 Apr 2014 09:31:07 -0700
Received: from localhost (localhost [127.0.0.1]) by mail1.fieldsolutions.com
 (Postfix) with ESMTP id F32731031781  
for <[email protected]>; Fri, 25 Apr 2014
 11:31:06 -0500 (CDT)
MIME-Version: 1.0
To: <[email protected]>
From: Field Solutions <[email protected]>
Subject: WIN#: 649890 NEW Signage - Reply-To: <[email protected]>
Content-Type: multipart/alternative;
boundary="=_747eac72d0ea92652b25d7d469d7165b"
Message-ID: <[email protected]>
Date: Fri, 25 Apr 2014 11:31:06 -0500
X-Mlf-KeyWords: preapproved,dollars$$$,pay,toner,expectations,fl,dollars,guarantee,voltage,confi
X-Mlf-Language-Detected: NoLanguageFilter_English
X-Mlf-Connecting-IP: 50.244.134.141
X-Mlf-Country-Code: US
X-Mlf-Rules: rn;7.24
X-Mlf-Rules-Pos-Features: WORD_voltage_2.97;WORD_configuration_2.51;WORD_inputs_2.50;WORD_documentation_2.
X-Mlf-Rules-Neg-Features: WORD_preapproved_-1.85;SUBJ_dollars$$$_-1.74;SUBJ_pay_-1.56;WORD_toner_-1.53;WOR
X-Mlf-Sliderbars: N4,B4,S4,L4,Q4,G4,A4,I4
X-Mlf-Version: 7.4.4.8439
X-Mlf-Threat-History: nothreat
X-Mlf-Threat-Detailed-History: nothreat;none;none;none
X-Mlf-UniqueId-History: i201404251631070343409
X-Mlf-Connecting-IP: 208.17.117.5
X-Mlf-Country-Code: --
X-Mlf-Threat: nothreat
X-Mlf-Threat-Detailed: nothreat;none;none;cloud-nj
X-Mlf-UniqueId: i201404251630370000228
Return-Path: [email protected]
X-MS-Exchange-Organization-Network-Message-Id: 5ea15b9c-561d-4a2a-d03e-08d12ebad75d
X-MS-Exchange-Organization-AVStamp-Enterprise: 1.0
X-MS-Exchange-Organization-AuthSource: Xchngsvr.a.com
X-MS-Exchange-Organization-AuthAs: Anonymous
There is only one Exchange server in the Organization

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