SMTP has been installed in IIS, and the SMTP service disappears after a period of time.
IIS 5.0:
Right-click "Network Connections" at the desktop, select "Properties", right-click "Local Connection" in the pop-up window or you currently activate the network connection, select Properties. Select "Install" in the pop-up window, click "Service" option, then click "Add button", select the "Microsoft Network's File and Printer Sharing" to install, if the service is already installed, try to uninstall reloading. (This method is suitable for the disappearance of SMTP and NNTP services.)
IIS 6.0:
Operation: Regsvr32% SystemRoot% / System32 / IneTSRV / SMTPSNAP.DLL (where% SystemRoot% is your Windows2003 installation path.) At the same time, IIS 5.0 can also be tried.
Both all versions can be resolved by unloading / reloading IIS, but this method is not recommended.
