Delay in sending Mail

Check if there is an error in the Monitoring / Current Status menu, you will probably have some “BackgroundJobSearchIndex” or “failing background jobs” error, execute the following command:

  1. systemctl stop zammad (Stop the Zammad application)

  2. zammad run rake searchindex:rebuild (Rebuild your elasticsearch index)

  3. systemctl start zammad (Start the Zammad application)

This process can take a few hours if there are too many failed jobs

Your server performs well and is larger than the one being used by Zammad Application, below is a link to configure your server and get better performance: