If you decide to use the STMP service in Windows 2000, it is important that you disable relaying. Relaying is used by spammers to use your server to send tens of thousands of email messages through your server, hiding the true source of the unsolicited e-mails. In order to disable relaying, in Internet Information Services, right click "Default SMTP Virtual Server" and click "Properties." Select the "Access" tab, click the "Relay" button, and select the "Only the list below" radio button. You do not need to add any domains to the "Computers:" list. Click "OK" to close that window. Click OK again to close the "Properties" window. However, if you are not going to use the SMTP Server that is installed with Windows 2000, disable this service. In order to stop the service, right click the SMTP Virtual Server, and click "Stop."
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