Problem Returning ServerVariables LOGON_USER

[allanrxx]

Hi,

I have site running on a Windows 2000 server on my (NT4) internal domain(TESTDOMAIN). I need to be able to display certain information on the web pages based on who is accessing the site. I'm trying to use Request.ServerVariables("LOGON_USER") to show me who is logged in, but I'm having trouble with it...

If a user is already logged onto TESTDOMAIN, I don't want them to have to re-enter their login information when they try to access the site.

I have DNS set up for the site as

http://mysite.mydomain.com.

When I try to access the site through this hostname, the LOGON_USER variable is blank...I guess since IIS sees the user hitting the site as the IUSR_machinename anonymous account. If I access the site via

http://machinename,

it returns the correct domain user account. My problem is that I need to set it up using a dns host name....and if I remove anonymous access from the site, the users will be prompted for a username/password every time they hit the site.

How can I determine the user's TESTDOMAIN account name transparently when they try to access

http://mysite.mydomain.com?

Thanks very much in advance for any information!