if you are having the following error in Bitnami Redmine or just Redmine
Email delivery error: hostname “your domain” does not match the server certificate then you can fix it by adding the following to the config.
This is sometime ok if you are using smtp relay and don’t need to have the certification.
To fix this problem edit the following file
Make sure that is under smtp settings (use spaces insted of tabs in this config file) then you can reload the bitnami
./ctlscript.sh restart apache