The alert email notifications are not sent, although the “Test transport” is working. I have also entered the valid email address in Global Settings -> Alerting -> General Alert Settings -> Default contact. The error I got in Overview -> Eventlog:
Could not issue recovery for rule ‘Sensor over limit - Check Device Health Settings’ to transport ‘mail’ Error: Could not instantiate mail function.
The value for “Global Settings -> Alerting -> Email Options -> How to deliver mail” is mail, the same as “Transport type” I tested and is working.
I have also read the existing topics related to similar issues but I didn’t find a fix that could work for me.
Here is the output of ./validate.php:
==================================== Component | Version --------- | ------- LibreNMS | 1.64.1-18-g7b93b386a DB Schema | 2020_04_19_010532_eventlog_sensor_reference_cleanup (165) PHP | 7.2.31 Python | 3.8.2 MySQL | 10.4.12-MariaDB-log RRDTool | 1.6.01.6.0 SNMP | NET-SNMP 5.8 ==================================== [OK] Composer Version: 1.10.7 [OK] Dependencies up-to-date. [OK] Database connection successful [OK] Database schema correct