Details
Description
CiviMailProcessor does not handle certain bounces: http://forum.civicrm.org/?topic=11009
Fix it so that the bounce action is also triggered by a bounce pattern in the Return-Path header; (work-needing) patch contributed by Ken Hapeman in the above thread.
When fixing the civicrm_mailing_bounce_pattern bounce pattern, make sure the upgrade scripts are also updated (for both 3.0.3 and 3.1.alpha3).