Website link for 63.87.94.131

DSBL,
 
I have submitted the proper mail to de-list this server.  I am a little unclear as to how it could have gotten listed.  I do not see the required cookie in the email your server received from our host.  I have tested this and another of our servers with the same configuration (MS Exchange 2003), and all tests indicate this is not an open relay.  
 
Please provide any further information that you have on this host, or any information that can help me to verify this host is secure.  I have read your entire FAQ and the only thing left (in my mind) is a malicous user.  Is there any more to the header that your server received, maybe something including an end host IP address.  If it is an internal user or student, I would like to find out who, and why this occurred.  
 
Thank you in advance.
 
Brice Spreitzer
Server Administrator
Career Education Corp.
Online Education Group
847.851.5133