Emails from Filemaker not downloading on Outlook 2011. XML Error

October 10, 201312 yr

We are using FM 12 and have many mac users on Outlook 2011. Many users are reporting Outlook saying "Unable to download the item. Item contains invalid XML characters" it does not tell them which message it is but I have managed to find out which emails and there does not seem to be a pattern. I believe the fault is something to do with invalid UTF 8 characters. The emails are being sent by a server side script using the SMTP option of the send mail script item.

The problem is that these emails are really important and are warnings to people about problems with our business.

I will paste in below the source of one of the emails:

Return-Path: <[email protected]>
X-Spam-Status: No, hits=0.0 required=8.0
	tests=AWL: 0.294,BAYES_00: -1.665,CUSTOM_RULE_FROM: ALLOW,
	TOTAL_SCORE: -1.371,autolearn=ham
X-Spam-Level: 
X-Footer: aW1wYWN0aW50ZXJuYXRpb25hbC5jb20=
Received: from Andy-Read-2.local ([10.0.0.226])
	by mail.mydomain.com (Kerio Connect 8.1.3)
	for [email protected];
	Tue, 24 Sep 2013 15:12:55 +0100
Date: Tue, 24 Sep 2013 15:13:09 +0100
From: [email protected]
To: [email protected]
Message-ID: <[email protected]>
Subject: 
 =?UTF-8?B?UmF5dGhlb24gU3lzdGVtcyBMaW1pdGVkCyAoMTE3MDQpIENvc3RpbmcgRWRpdGVkIHdoaWxzdCBDb25maXJtZWQgb3IgRm9yZWNhc3RlZA==?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Andy Read