I've got a call in to the admin to make sure, but I do believe they are the same. I did a check of the ip address for the mx record and got the following.
SMTP - 25 220 server.xxx.org Microsoft ESMTP MAIL Service, Version: 6.0.3790.3959 ready at Fri, 19 Oct 2007 11:19:24 -0800
HTTP - 80...