How to Fix SMTP ERROR: Failed to connect to server: Connection refused (111) error on WordPress?

Silicon House servers comes with free cPanel/WHM. In Dedicated server you will get full root and shell access. In this session we are going to see How to Fix SMTP ERROR: Failed to connect to server.

Most of the WordPress customers are facing the issue while sending mails from WordPress using any plugins. Some of them are getting the error ‘SMTP ERROR: Failed to connect to server: Connection refused (111) error’. To fix this error you would need to disable SMTP Restrictions in your server.

Please follow the below procedure to disable SMTP connections:

[1] Login to WHM

[2] Go to “SMTP Restrictions” under “Security Center”

[3] Click on the “Disable” button

This feature prevents users from bypassing the mail server to send mail, a common practice used by spammers.

[4] Now goto “Tweak Settings” under “Server Configuration”

Tweak settings, allows you to configure many cPanel & WHM settings. Tabs at the top of the interface categorize the settings, and the all tab displays all of the settings.

[5] Disable “Restrict outgoing SMTP to root, exim, and mailman (FKA SMTP Tweak)” on mail section

Enabling this feature will redirect outgoing SMTP connections to the local mail server. root, exim, and mailman are still allowed to make direct connections.

Done! Hereby we came to know How to Fix SMTP ERROR: Failed to connect to server: Connection refused (111) error on WordPress.