[Bug 886296] [NEW] Improve DSN handling for google 'inactive' accounts

Public bug reported: The DSN bouncer handler can't seem to parse out when a bounce is generated due to an inactive google account. See attached bounce file for example. ** Affects: mailman Importance: Undecided Status: New -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/886296 Title: Improve DSN handling for google 'inactive' accounts To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/886296/+subscriptions