Block All Domains Whitelist Select Domains

[dude9er]

In cPanel how do you set up filtering to BLOCK all domains for both inbound and outbound emails and whitelist my company domains. I am looking to only allow inbound and outbound emails to be sent from 4 company domains and block employees from receiving and sending emails from all other domains. Emails are to be used for business purposes only and therefore all non-business domains need to be blocked.

Thanks everyone.

 

[cPanelMichael]

Hello

It may be easier to setup this configuration with firewall rules instead of custom Exim ACL rules. You may want to try ensuring that only local connections are allowed for mail-related services. Or, you could also block a range of IP addresses (every range except your own) under "Access Lists" in "WHM Home » Service Configuration » Exim Configuration Manager".

Thank you.