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I am running Xmail server in Windows 2003. When I took SMTP test at I am getting an error as 550 Relay Denied. How to fix this error? file contains the following.

"" "" The syntax shout be as "<IP><tab><SubMask>" But why I am getting this error?

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This is no error. This is by intention! If you ever fix this error everybody is going to kill you.

You are not allowed to create an open relay in the Internet. And MxToolbox confirms that you do not have one.

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