There are four ways of forwarding email in DirectAdmin:
1-5. Follow steps 1 to 5 of the single email address forwarding process above
6. Instead of putting a single email address in the destination address bottom box, put a comma delimited list of email addresses in the box such then click CREATE. Example: email1@somewhere.com,anotheremail@wherever.com,etc@etc.com
7. Confirm the forwarder appears in your list of forwarders