The Catch-all tab of the Mail Manager section in the Control Panel allows you to create a catch-all mailbox for your account.
To set up a given mailbox as a catch-all, select the mailbox you wish to act as a catch-all, and click on the Submit button.
You should note that the catch-all mailbox will gather only messages sent to nonexistent mailboxes at your domain.Email forwarding, SpamAssassin, and anti-virus protection cannot be enabled for the catch-all mailbox. This restriction is imposed due to performance considerations.