i m ali from kuwait

my job is IT manager

i have problem in hotmail in contact list

cannot list contact when i write an email and when the click botton TO cannot see any email in the contact

NOTE .. i use isa server in the my company and before 7 days with working fine and No change in setting in isa server

me attached  pictuer for this problem this link (http://www.freeimagehosting.net/bujwh)

Regards