NDR – Undeliverable

Q:  I received an NDR that says "Undeliverable: Sorry the email could not be delivered. The user user@domain.com does not exist or is not authorized to use this forwarder."

A:  When adding users to the Add Users screen - be sure you don't include the domain name. For example: if the user's email address is jon@acme.com - only "Jon" should be entered.