I'm having a strange problem with SugarCRM and SMTP / Qmail.

Windows XP
Sugar CRM Version 4.5.0f
IIS Server
PHP Version 4.4.2
MySQL 3.23.49

SMTP on Different Server
Plesk using Qmail

We are using SMTP from our Web server (not the XP box where Sugar CRM is located). Every once in a while someone gets an error message back with a QMail error message. The message refers to the control/locals file, but the domain is listed. The message has a strange ISO-8859-bla-bla-email in the To: field. (see message below). I'm not sure if this is a formatting issue with the email or if it is a Qmail configuration issue. Note: emails and server names are XXX'ed out.

Any ideas are welcome.
Thanks,
Jeff Walters



==============================

Hi. This is the qmail-send program at w1354.xxxxxx.net.
I'm afraid I wasn't able to deliver your message to the following addresses.
This is a permanent error; I've given up. Sorry it didn't work out.

<=?ISO-8859-1?Q?Susan=5FDempski=40Dell=2Ecom?=@w1354.xxxxxx.ne t>:
Sorry. Although I'm listed as a best-preference MX or A for that host,
it isn't in my control/locals file, so I don't treat it as local. (#5.4.6)

<=?ISO-8859-1?Q?Bradley=5FKeup=40XXXXl=2Ecom?=@w1354.xxxxxxxx. net>:
Sorry. Although I'm listed as a best-preference MX or A for that host,
it isn't in my control/locals file, so I don't treat it as local. (#5.4.6)

--- Below this line is a copy of the message.

Return-Path: <ecrawford@xxxxxxxx.com>
Received: (qmail 27620 invoked from network); 7 Feb 2007 22:36:41 -0000
Received: from mail.xxxxxxxxxxx.com (HELO appserver) (67.78.242.98)
by host82.xxxxxxx.net with SMTP; 7 Feb 2007 22:36:41 -0000
Date: Wed, 7 Feb 2007 17:26:36 -0500
Return-Path: ecrawford@xxxxxxx.com
To: =?ISO-8859-1?Q?Susan=5FDempski=40XXXX=2Ecom?=
Cc: =?ISO-8859-1?Q?Bradley=5FKeup=40XXXX=2Ecom?=
From: "ecrawford@laserphotonics.com" <ecrawford@xxxxxxxx.com>
Reply-to: "ecrawford@laserphotonics.com" <ecrawford@xxxxxxx.com>
Subject: RE:
Message-ID: <14bb0794fe519a76fadc4616e645b786@appserver>
X-Priority: 3
X-Mailer: PHPMailer [version 1.73]
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="b1_14bb0794fe519a76fadc4616e645b786"


--b1_14bb0794fe519a76fadc4616e645b786
Content-Type: text/plain; charset = "ISO-8859-1"
Content-Transfer-Encoding: quoted-printable

>
---- Rest of Email