Hi,

Can you please check I am not able to set SMTP email in Ticketing system

Below is the screenshot

there may be many reasons for this, some firewall issue or a wrong port number.

You may check that on your server and if it does not work, then I would advise to just disable SMTP, the system will still send the email via PHP from the server and if someone replies, the same will be updated on the ticket thread.

thanks