This system uses the forwarding field in the LDAP directory to route mail without passing it through a users .forward file on a single host. Multiple machines participate in the forwarding to provide redudancy. Otherwise the message is relayed to master.debian.org for processing by the users .forward files. If email forwarding is setup then .forward files are NOT considered.
All machines also use the forwarding attribute as a default destination for email.
This makes sure cron reports, bug responses and other unexpected emails are not misplaced. This feature has been supported on debian.org machines for a good while now, and will continue to be supported. Putting the mailbox path will not work. Also, 'Exim Filter' files are deliberately turned off. Back to the Debian Project homepage .