Hi, After input in Outlook webmail form browser timesout, and notting happends.. When users goto webmail.xxx.xx they recive the form where they input username and password but after that notting happens in the process line it times out. this happnes sometimes... and we can see that 40 users are online on the webmail but others cant get in... the temp. solution is so reboot the server and then it works... but after some hours same happens.. any ideas? system info: running exchange2003 backend running outlook 2000 frontend