- - Microsoft
- -- (deprecated) Microsoft Windows OS (XP/NT/Vista)
- ---- 550 "Unknown User"
kaled - 10:46 am on Feb 9, 2010 (gmt 0)
In the case of the "Unknown User" error, did you check the header as you did previously? If it's blank again that would be interesting.
Thread source: http://www.webmasterworld.com/microsoft_windows_os/4074943.htm
Brought to you by WebmasterWorld: http://www.webmasterworld.com