I have a CRM 4 installation in my domain and things runs just fine. Now I need users outside the domain to be able to access the CRM from the Internet, so I have setup a ISA 2006 to serve this issue.
I have followed the instruction described in this blog: http://blogs.technet.com/isablog/archive/2008/07/23/publishing-microsoft-crm-4-0-through-isa-server-2006.aspx
Internet users get the CRM login page, but when they try to login with their domain user the page just says "wrong username/password" or just reloads.
Nothing is logged on the domain controllers (logon failure). If I type a username that don't exist in the domain I can see this in the event log on the DCs (meaning the login page do send the credential to the DCs).
I have published Sharepoint through the ISA and that works like a charm.
Anyone have any ideas or experience with CRM and ISA?