OWA Outlook Web Access 2007 logon username format

We recently installed MS Exchange 2007.  We have one CAS server and two mailbox servers, each is a Hub server.  When users log on to OWA (Outlook Web Access) they have to enter their username in the form "username" - I set the domain under the Client Accss Server role OWA properties.  With OWA 2007, users are forced to strictly use the "username" convention, if they use "domain\username" or more commonly in our case they try to use "username@domain.com" the logon failes.  With OWA 2003, users could log on using any of the 3 logon styles.  I know I can switch between the logon types, but is there a way to replicate the OWA 2003 behavior of allowing any of the logon types?
Who is Participating?
so you have set the auth to FBA - User name and specified the logon domain?

I am configured that way and can logon with all 3 methods, I must not I am running exchange 2007 sp1 but I believe rtm had the same functionality.

did you set the same auth for all the virtual directorys in EMC?
supportlaselleduAuthor Commented:
Yes.  I set the FBA to "User Name Only" and specified the domain.  
We are not running SP1 (still in Beta, right?)
In IIS, for the OWA directory, the default of "Basic authentication" is checked and the default domin has our domain name - that is it.  These are the out-of-the-box settings, I didn't set them specifically or change them.  

What do you have?
Yes, its in Beta but I work with the TAP so I am always running beta code in production.... make life fun :)

My CAS servers are even longhorn (windows 2008) :P

so the only logon that works for you is usernameonly
if domain\userid fails
and UPN fails?

do you have multiple domains?
supportlaselleduAuthor Commented:
Ah - I changed the IIS OWA Virtual App's security settings - instead of my domain, I put in a "\" and that seems to have fixed this issue.  Thanks!
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