Disabling open relay on cPanel server

Sometimes your server might face mail problems as the server is configured for open relay.

Open Relay allows SMTP server to be configured in such a way that it allows anyone on the Internet to send e-mail through it. This can blacklist the server's IP address.

To disable Open Relay on the cpanel server you can follow following simple steps:

1. Login to WHM.
2. Navigate to WHM >> Main >> Tweak Settings >> Initial default/catch-all forwarder destination.
3. Set this setting to "Bounce/Fail". This should turn off the open relay on the server.

Enabling "Bounce”/"Fail" module is usually the best choice if you are getting mail attacks.

Thank you.