I'm running Exchange and although I know of all the security concerns with opening port 25, I have a few client programs that expects this port to be open. However the port is closed. I thought that this port was opened by default? How can I open port 25 on my server?
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How can I open port 25 on my server?
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You wanna ask that again? Are you saying the clients cannot open port 25 to the server? Or server cannot open port 25 to the outside world? Or what? More detail please.
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