Adding additional debian related header tags for mail filtering
--- a/config/config_sample.php
+++ b/config/config_sample.php
@@ -229,6 +229,13 @@
  'From', 'To', 'Cc', 'Bcc', 'Subject', 'Reply-To', 'Sender', 'List-Id',
  'MailingList', 'Mailing-List', 'X-ML-Name', 'X-List', 'X-List-Name', 'X-Mailing-List',
  'Resent-From',  'Resent-To', 'X-Mailer', 'X-Mailing-List',
+ /* debian and ubuntu flags */
+ 'X-PTS-Package', 'X-Loop', 'X-Debian-PR-Message', 'X-Debian-PR-Package',
+ 'X-Debian-PR-Keywords', 'X-Debian-PR-Source', 'X-PTS-Keyword',
+ 'X-Debian', 'X-Debian-Package',
+ 'X-Launchpad-Bug', 'X-Launchpad-Bug-Private', 'X-Launchpad-Bug-Security-Vulnerability',
+ 'X-Launchpad-Message-Rationale', 'X-Generated-By',
+ /* debian and ubuntu flags end */
  'X-Spam-Flag', 'X-Spam-Status',
  'X-Priority', 'Importance', 'X-MSMail-Priority', 'Precedence',
  'Return-Path', 'Received', 'Auto-Submitted',
