Mail::DeliveryStatus::BounceParser analyzes RFC822 bounce messages and returns a structured description of the addresses that bounced and the reason they bounced; it also returns information about the original returned message including the Message-ID. It works best with RFC1892 delivery reports, but will gamely attempt to understand any bounce message no matter what MTA generated it. WWW: http://search.cpan.org/dist/Mail-DeliveryStatus-BounceParser/