Dot as domain name with TSE and Win 2003 Server

Hi,

I'm working on the gina, and I use LogonUser to log on users via smart cards.

For the domain name, Windows API states this

lpszDomain

[in] A pointer to a null-terminated string that specifies the name of

the domain or server whose account database contains the lpszUsername

account. If this parameter is NULL, the user name must be specified in UPN

format. If this parameter is ".", the function validates the account by using

only the local account database.

But when trying to do this, I have as result 'Invalid domain name format"

If I let this field blank (not empty) I can connect.

Is this "dot" fonctionnality a win 2003 issue

Thanks for your answers

Thierry Nivon