SZÉPE Viktor writes:
Good evening! I am investigating a strange monitoring phenomenon. localhost (lo interface) is monitored on port 25 with a program called Monit. Monit generates a very small SMTP communication. Usually it is OK. When the Internet-facing interface (eth0) is down - for some reason but not DHCP - the test fails. Of course couriertcpd binds on 127.0.0.1 only as "ADDRESS=127.0.0.1" Could it be that Courier unbinds from localhost when eth0 is down?
Nope.Sounds like either your entry in /etc/hosts for localhost refers to your public IP address, or your monitoring program is set up to monitor your public IP address.
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