Exchange to Hotmail - Hotmail is Content Filtering?

I have a Exchange 2003 box running, with appropriate IP addresses and 
Pointer Records out on the internet. When I send emails to a Hotmail 
account, say, some of the emails go through, while 
some don't.

For example:

Message 1: (This message DOES NOT get through to the hotmail recipient)
Subject: 2212

Message 2: (This message DOES get through to the hotmail recipient)
Subject: Test Message 3
Test Message 3

-----Urspr�ngliche Nachricht-----

Von: My Name []
Gesendet: Montag, 26. M�rz 2007 20:41
An: My Name
Betreff: Test

Der neue MSN Messenger. Schreiben.Sehen.H�ren. Wie im echten Leben. - Jetzt 

If I send the same two messages to other (Carbon Copy to non Hotmail) 
domains, they get through. To send e-mail to Hotmail accounts, I have to add 
some dummy info at the end of the message "Urspr�nglich Nachricht" etc... as 
a work around to make the messages get through.

I even ran a packet sniffer, and saw that the Hotmail SMTP servers replied 
with a "Queued Mail for Delivery". However, the mail never ends up in the 
user's Hotmail inbox. The original sender from the Exchange server does NOT 
get an NDR from Hotmail neither.

What could be the problem? Seems like Hotmail is doing some sort of "content 

-Thanks for any advice.

keine (1)
3/27/2007 4:34:56 AM
exchange.admin 57650 articles. 1 followers. Follow

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