dear exchange experts i have Windows 2000 Advanced server SP3 Exchange 2000 SP3 ( mail server ) i cannot start the SMTP virtual server ... it showing timly fashion i make it only ip address in the SMTP VS properties and it used port 25 there is on other application used this port .. i chech by netstat -an can some one guide me plz this is the error Event Type: Error Event Source: SMTPSVC Event Category: None Event ID: 115 Date: 11/30/2002 Time: 8:02:34 PM User: N/A Computer: DOMEXH01 Description: The service could not bind instance 1. The data is the error code. For additional information specific to this message please visit the Microsoft Online Support site located at: http://www.microsoft.com/contentredirect.asp. Qusai Ali AL-Haddad