Like lots of other people in this forum, mail alerts do not work for me. I have configured the mail account in Settings→Alerting→Email options and created an Alert transport in the very well hidden section Alerts→Alert transports, but no emails get send. When I click the orange checkmark button, which I assume is the “test transport” button, I only get an error message saying “general error”, nothing in the logs.
Output of validate.php:
===========================================
Component | Version
--------- | -------
LibreNMS | 23.11.0-13-g7630983b5 (2023-11-30T18:54:50+01:00)
DB Schema | 2023_11_21_172239_increase_vminfo.vmwvmguestos_column_length (274)
PHP | 8.2.7
Python | 3.11.2
Database | MariaDB 10.11.4-MariaDB-1~deb12u1
RRDTool | 1.7.2
SNMP | 5.9.3
===========================================
[OK] Composer Version: 2.6.5
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database Schema is current
[OK] SQL Server meets minimum requirements
[OK] lower_case_table_names is enabled
[OK] MySQL engine is optimal
[OK] Database and column collations are correct
[OK] Database schema correct
[OK] MySQl and PHP time match
[OK] Active pollers found
[OK] Dispatcher Service not detected
[OK] Locks are functional
[OK] Python poller wrapper is polling
[OK] Redis is unavailable
[OK] rrd_dir is writable
[OK] rrdtool version ok