Mail transport not working, test shows ok

[Dejan]

===========================================
Component | Version
--------- | -------
LibreNMS  | 23.9.1-10-g3e5230013 (2023-09-24T22:20:26+02:00)
DB Schema | 2023_08_30_105156_add_applications_soft_deleted (259)
PHP       | 8.1.11
Python    | 3.8.10
Database  | MariaDB 10.3.36-MariaDB-1:10.3.36+maria~ubu1804
RRDTool   | 1.7.2
SNMP      | 5.8
===========================================

[OK]    Composer Version: 2.6.3
[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
[WARN]  Using database for locking, you should set CACHE_DRIVER=redis
[OK]    rrd_dir is writable
[OK]    rrdtool version ok
[WARN]  Your local git contains modified files, this could prevent automatic updates.
        [FIX]: 
        You can fix this with ./scripts/github-remove
        Modified Files:
         rrd/.gitignore

I’m using mail transport through office365 outlook account which has been working before. Mail account and credentials work as i have another system that is sending emails regulary.

When i use test transport function it shows OK but no emails are coming through. I’v checked logs in microsoft 365 exchange environment and there are no signs of attempts to send, wrong credentials, quarantine and nothing like that.

I tried looking into logs of librenms but i cannot seem to find any trace. Where to look for errors in mail transport?

[shuffleboard_admin]

Have you tried a different template, maybe one with no {{ }} variables in it? I am having issues with some variables not working and it was sending test messages but not actual alerts using some variables

[Dejan]

Thanks for the tip. I just tried that but no luck.
Created template with just some bogus text but it didnt help.

Just to be clear i dont get email from test transport function either. It just states OK in the GUI

[Dejan]

Just informing the community that everything works fine. LiberNMS was not cause of it.
It was a firewall rule outside Libre.