Win2K3, IIS6, and IE6 - Can't get IWA/NTLM to work

Hi,

I have a Win2K3 Server with IIS6 on it. In the Default website, I have a directory (/iwaprotected) with just a default.asp in it. The machine is a member of domain "whatever.com".

When I use IE6 (on the same physical machine) to connect to http://<FQDN_of_my_server>/iwaprotected/default.asp, I get a popup login window.

However, when I try to login using a valid user (e.g., "whatever\testuser" or "testuser@xxxxxxxxxxxx") and password, the popup just re-displays. After 3 times, I get an 401.1 error.

I know that the username/password are valid, because I can login to the Windows domain using them.

I've tried this with "Enable Integrated Windows Authentication" checkbox in IE6 both checked and unchecked, with same results.

I've also accessed the same website from another machine using the same FQDN, and get the same behavior

Does anyone have any idea about why this might be happening? Is there something that might prevent IE6 from being able to pass the user's credentials?

Thanks,
Jim
.

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