I have NT server and there is many sites hostsed in this server. But I got some problem. My some sites shows service Unavailable message. How I resolve this problem any guys can help me please!. Let me know how it heppens?:confused:

We need a lot more details on your particular setup, there can be about 10 different issues just to start with. 2k server? 2003 Server? Control Panel? Are host headers assigned? Are the sites running in IIS? Is dns setup correctly?

Please check if the Application Pools are in running state. A stopped application pool in IIS 6.0 throws this error.