monitoring-plugins-2.3.3p0: $ /usr/local/libexec/nagios/check_smtp -D "20 10" -H 2001:19f0:6c00:8501:5400:ff:fe04:3f -S OK - Certificate 'mx.xa23.de' will expire on Sun May 5 21:59:00 2024 +0000.
monitoring-plugins-2.3.5: $ /usr/local/libexec/nagios/check_smtp -D "20 10" -H 2001:19f0:6c00:8501:5400:ff:fe04:3f -S check_smtp: Set either -s/--ssl/--tls or -S/--starttls Usage: check_smtp -H host [-p port] [-4|-6] [-e expect] [-C command] [-R response] [-f from addr] [-A authtype -U authuser -P authpass] [-w warn] [-c crit] [-t timeout] [-q] [-F fqdn] [-S] [-L] [-D warn days cert expire[,crit days cert expire]] [-r] [--sni] [-v] I have not found an incantation that makes it go again. '-s' stops complaining, but it doesn't check certificate validity. In fact I;m not even sure it checks TLS at all. -- In my defence, I have been left unsupervised.
