Checkmk Werk 7339: Fixed broken mail notifications with Nagios core (1.5.0p14 regression)

ID: 7339 Title: Fixed broken mail notifications with Nagios core (1.5.0p14 regression) Component: Notifications Level: 2 Class: Bug fix Version: 1.6.0i1 Unfortunately, version 1.5.0p14 contained a bug that prevented mail notifications when using the Nagios core. According to our knowledge users of the Microcore are not affected. The error is displayed as follows in var/log/notify.log: C+: 2019-04-17 09:15:19 Preparing rule based notifications 2019-04-17 09:15:19 Found 0 user specific rules 2019-04-17 09:15:19 Global rule 'Notify all contacts of a host/service via HTML email'... 2019-04-17 09:15:19 -> matches! 2019-04-17 09:15:19 - adding notification of lm via mail 2019-04-17 09:15:19 Executing 1 notifications: 2019-04-17 09:15:19 * notifying lm via mail, parameters: host_subject, from, service_subject, disable_multiplexing, bulk: no 2019-04-17 09:15:19 executing /omd/sites/stable/share/check_mk/notifications/mail 2019-04-17 09:15:19 Output: Cannot send HTML email: empty destination email address 2019-04-17 09:15:19 Plugin exited with code 2 C-: