in the MX record??

[Jason Kern]

I will be hosting a site for someone who has an exchange server set up 
locally. Mail traffic for the domain needs to end up at that server 
rather than be hosted on my web server (sendmail). Can I just have the 
MX record in DNS set to point to their exchange server? Or does the MX 
record point to my server which redirects via SendMail config?  The 
exchange server has only a dedicated IP address.

Jason Kern