I would appreciate any help on this I have followed the book and website tutorials to create an owa publish rule. It is on ISA 2004, exchange 2003 and server 2003. The local active directory domain ends with *.local and the external one is *.com. I have created a zone in dns that resolves the mail.domain.com to internal nic of exchange which also is mail.domain.local. Certificate is made for mail.domain.com If I try https://mail.domain.com/exchange , then I get the login page with form based. But after putting my name in this format Domain\username and password I get an error page saying unknown request and the request could not be resolved by the server. I have been looking around and scratching my head to see what I have done wrong but no luck yet. So if any body has seen this problem and got a solution for this let me know and I will appreciate it