IP Virtualization - Outlook 2010 unable autoconfigure

Hello!

I have a problem with Outlook 2010 and Exchange 2010 on the MS Windows Server 2008 R2 RDS (RD Session Host) with users sessions IP-Virtualization. Outlook does not detect username (and email address) when user launch Outlook first time. If user manually enter all user parameters then Outlook works fine, but Outlook must do it automatically (Outlook_unable_detect_username.jpg). Without IP-Virtualization on the RD Session Host Outlook 2010 successfully detect username when first launched (Outlook_success_detect_username.jpg).

DHCP-server - Cisco Catalist Switch 3750.

Help me, please, with this problem.

Thanks,

Andrew.

P.S. I unable attach the images to request