On a test box that I have Astaro on, everything is peachy. I can "TELNET my.test.box 25", I get the following response:
220 my.test.box ESMTP
However, on my production machine (which has suddenly stopped relaying), I get no response when I TELNET to port 25, other than a clear screen indicating a connection. EHLO and HELO do nothing to bring up a response.
The production machine used to work beautifully, and nothing has changed on it.
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