I have a Windows 2000 server with Exchange 2003 running on it. We currently use MXLogic to filter our inbound and outbound email. MXLogic informed us that we had an Open Relay and spam coming from our site. They shut down the outbound filtering until we are able to shut down the relay and now we are unable to figure out how to shut down the relay.
We have an SMTP connector set up to direct all outbound email to go from the Exchange server to MXLogic.
And our firewall directs all incoming SMTP traffic to our Exchange server.
MXLogic is able to telnet into our site and relay email.
Any ideas on how to turn off the open relay?
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