Insert the catchall inside of cyberpanel’s e_forwardings table using phpmyadmin ( like source= @example.com with destination= catchall@example.com , you’ll have to create a destination mailbox btw ) INSERT INTO e_forwardings (source, destination) VALUES ('@20tester.app', 'catchall@20tester.app'); Then replace query in /etc/postfix/mysql-virtual_forwardings.cf with query = SELECT DISTINCT destination FROM e_forwardings WHERE source='%s' OR source='@%d' And that’s it. I do it like that because for some domain I don’t even want to create a mailbox and just forward all emails to gmail. query = SELECT DISTINCT destination FROM e_forwardings WHERE source='%s' OR source='@%d' To insert a `catchall` email address into CyberPanel's `e_forwardings` table using phpMyAdmin, and to create a destination mailbox, follow these steps: Step 1: Create a Destination Mailbox 1. Log into CyberPanel: - Open CyberPanel and log in. - Go to Mail &g