I'm running Zimbra 8.0.2, and it looks like internal messages are being virus scanned twice.

This sample is of me sending myself a test message. Notice the double virus scanning?

Code:
Return-Path: ahoppe@mpcsd.org
Received: from cottontail.mpcsd.org (LHLO cottontail.mpcsd.org) (10.1.1.37)
 by cottontail.mpcsd.org with LMTP; Wed, 9 Jan 2013 15:02:28 -0800 (PST)
Received: from localhost (localhost.localdomain [127.0.0.1])
	by cottontail.mpcsd.org (Postfix) with ESMTP id 6A5D513003FA
	for <ahoppe@mpcsd.org>; Wed,  9 Jan 2013 15:02:28 -0800 (PST)
X-Virus-Scanned: amavisd-new at mpcsd.org
Received: from cottontail.mpcsd.org ([127.0.0.1])
	by localhost (cottontail.mpcsd.org [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id Q-E7reEF_hCp for <ahoppe@mpcsd.org>;
	Wed,  9 Jan 2013 15:02:23 -0800 (PST)
Received: from localhost (localhost.localdomain [127.0.0.1])
	by cottontail.mpcsd.org (Postfix) with ESMTP id 98760130043E
	for <ahoppe@mpcsd.org>; Wed,  9 Jan 2013 15:02:22 -0800 (PST)
X-Virus-Scanned: amavisd-new at mpcsd.org
Received: from cottontail.mpcsd.org ([127.0.0.1])
	by localhost (cottontail.mpcsd.org [127.0.0.1]) (amavisd-new, port 10026)
	with ESMTP id yzxYc2tlBePN for <ahoppe@mpcsd.org>;
	Wed,  9 Jan 2013 15:02:21 -0800 (PST)
Received: from cottontail.mpcsd.org (cottontail.mpcsd.org [10.1.1.37])
	by cottontail.mpcsd.org (Postfix) with ESMTP id 9789E1300433
	for <ahoppe@mpcsd.org>; Wed,  9 Jan 2013 15:02:21 -0800 (PST)
Date: Wed, 9 Jan 2013 15:02:21 -0800 (PST)
From: Anthony Hoppe <ahoppe@mpcsd.org>
To: Anthony Hoppe <ahoppe@mpcsd.org>
Message-ID: <202652381.159722.1357772541292.JavaMail.root@mpcsd.org>
Subject: Test
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
X-Originating-IP: [10.10.45.40]
X-Mailer: Zimbra 8.0.2_GA_5569 (ZimbraWebClient - GC23 (Mac)/8.0.2_GA_5569)
Thread-Topic: Test
Thread-Index: sSVLV0LfkoHhnUpZbrPo+EcgTtIwnw==
Here is a message from an internal user to me (user is masked for privacy) before we upgraded to 8.0.2 (we were previously running 6.0.14). Only

Code:
Return-Path: [maskeduser]@mpcsd.org
Received: from cottontail.mpcsd.org (LHLO cottontail.mpcsd.org) (10.1.1.37)
 by cottontail.mpcsd.org with LMTP; Fri, 14 Dec 2012 16:04:29 -0800 (PST)
Received: from localhost (localhost [127.0.0.1])
	by cottontail.mpcsd.org (Postfix) with ESMTP id CC4E3DD0006;
	Fri, 14 Dec 2012 16:04:29 -0800 (PST)
X-Virus-Scanned: amavisd-new at cottontail.mpcsd.org
Received: from cottontail.mpcsd.org ([127.0.0.1])
	by localhost (cottontail.mpcsd.org [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id nMsPGHQVT9Bq; Fri, 14 Dec 2012 16:04:22 -0800 (PST)
Received: from cottontail.mpcsd.org (cottontail.mpcsd.org [10.1.1.37])
	by cottontail.mpcsd.org (Postfix) with ESMTP id ED65413D0001;
	Fri, 14 Dec 2012 16:04:22 -0800 (PST)
Date: Fri, 14 Dec 2012 16:04:22 -0800 (PST)
From: [maskeduser] <[maskeduser]@mpcsd.org>
To: Anthony Hoppe <ahoppe@mpcsd.org>
Message-ID: <26790457.3341.1355529862933.JavaMail.root@cottontail>
In-Reply-To: <12270407.2983.1355526724187.JavaMail.root@cottontail>
Subject: Fwd: Report Card Update
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
X-Originating-IP: [10.20.45.11]
X-Mailer: Zimbra 6.0.14_GA_2931 (ZimbraWebClient - FF3.0 (Mac)/6.0.14_GA_2928)
Am I crazy? If not, how to I configure 8.0.2's virus scanning to behave like 6.0.14?