[otrs] Address Book Search not working

We recently upgraded our mail server to Exchange 2007. Since making this change the Address Book search feature in OTRS does not work. If you enter an name and click search it dos not return any results. Anyone have this issue before? Thanks, Gary Disclaimer: The information supplied in this message may be legally privileged. If you are not the intended recipient of this message, the sender does not intend delivery to you to waive any privilege or right pertaining to this message. If you have received this message in error, please immediately notify the sender by return e-mail, and delete the errant message. Thank you.