No, the emails are getting sent over the internet from an Exchange
2003 server to a SendMail server and retrieved via POP3 to an Outlook
2007 client.
Below is the contents of PR_TRANSPORT_MESSAGE_HEADERS on the recieved
email (addressses removed):
Return-Path: <
[email protected]>
X-Spam-Checker-Version: SpamAssassin 3.1.4 (2006-07-25) on
xxxxx.xxxxxxxxx.com
X-Spam-Level:
X-Spam-Status: No, score=-2.0 required=8.0
tests=AWL,DK_POLICY_SIGNSOME,
HTML_MESSAGE,KAM_RPTR_PASSED,KAM_RR_NEGATIVE,MIME_HTML_MOSTLY
autolearn=disabled version=3.1.4
Received: from xxxxx.xxxxxxxxx.xxxxxxx (xxxxxx.xxxxx.com
[206.239.6.43])
by xxxxx.xxxxxxxxx.com (8.13.6/8.13.6) with ESMTP id l930otNs030722
for <
[email protected]>; Tue, 2 Oct 2007 20:50:56 -0400
X-MimeOLE: Produced By Microsoft Exchange V6.5
MIME-Version: 1.0
Content-Type: multipart/alternative;
boundary="----_=_NextPart_001_01C80557.747FF271"
Content-class: urn:content-classes:message
Subject: test
Date: Tue, 2 Oct 2007 20:50:54 -0400
Message-ID:
<
[email protected]>
X-MS-Has-Attach:
X-MS-TNEF-Correlator:
Thread-Topic: test
Thread-Index: AcgFV3KuHBmCOscPS8O5+ckL8lEqMg==
From: "XXXX XXXX" <
[email protected]>
x-teststring: TestString
To: <
[email protected]>
X-RelayRegistry-Debug: xxxxx.com.by.206.239.6.43.relayregistry.org
X-RelayRegistry: Passed - verified.relayregistry.org. 600 IN A 0.0.0.0
X-KAM-Reverse: Passed - Reverse DNS of xxxxx.xxxx.com/206.239.6.43
X-Scanned-By: MIMEDefang 2.63 on 63.216.184.8
Status:
In the above I can see my test X-Header named "X-TESTSTRING" made
through Exchange and over the internet successfully. Looking at the
IMessage for the recieved email I can see that Outlook automatically
generated named string properties in the PS_INTERNET_STRINGS space for
all the X-headers shown above except the one I added. The only thing
that looks like it might be a problem is that Exchange converted my
property name to lower case for some reason, it had a property name of
"X-TESTSTRING" when it was added. The issue with this is that email
replies won't carry on my X-Header as expected because there won't be
a PS_INTERNET_STRINGS property generated for it.