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Hmmmm, wouldn't know how to do that. This program is on a PC running NT4, it is hooked to a DSL connection. Our ISP is TDS, I think my boss had them set the MX records to point to our ISP. I know that in his infinite wisdom my boss has us hosting e-mail for people outside of our LAN, so I would assume that means the door is "wide open" so to speak. I just want to know how to close it and how to tell if the systems being abused.
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