Add support for Zarafa
See http://www.howtoforge.com/forums/showthread.php?t=30515
If a zarafa user is created, no mailbox is needed, just pipe the incomming mail to /usr/bin/zarafa-dagent
See http://www.howtoforge.com/forums/showthread.php?t=30515
If a zarafa user is created, no mailbox is needed, just pipe the incomming mail to /usr/bin/zarafa-dagent