Hey guys, I got a weird problem, it seems that one of my own website server, which is sending smtp email using my MIAB on another server, has been blocked by my MIAB. My website server is not able to connect to it at all?
Telnet doesn’t even connect, but with all other servers I’m able to telnet to it…
telnet box.xxxxxx.net 587
telnet: Unable to connect to remote host: Connection refused
From other Ubuntu server I get:
telnet box.xxxx.net 587
Connected to box.xxxxx.net.
Escape character is ‘^]’.
220 box.xxxxxx.net ESMTP Hi, I’m a Mail-in-a-Box (Ubuntu/Postfix; see https://mailinabox.email/)