I cant get any root mail from a Zimbra server running on CentOS 5x 64. I have a clear alias in /etc/aliases and have run newaliases, but messages to root bounce and they are not getting sent to the configured alias?

This is in /etc/aliases:

# Person who should get root's mail
root: alerts@openenterprise.ca

Bounce message from maillog:

Aug 12 12:41:14 epiphany postfix/smtpd[16504]: disconnect from localhost.localdomain[]
Aug 12 12:41:14 epiphany postfix/smtp[16503]: 863217D0001: to=<root@epiphany.johnnystork.ca>, relay=[]:10024, delay=0.44, delays=0.05/0.01/0/0.37, dsn=2.0.0, status=sent (250 2.0.0 Ok, id=09612-05, from MTA([]:10025): 250 2.0.0 Ok: queued as EAC837D000B)
Aug 12 12:41:14 epiphany postfix/qmgr[11642]: 863217D0001: removed
Aug 12 12:41:15 epiphany postfix/smtp[16505]: EAC837D000B: to=<root@epiphany.johnnystork.ca>, relay=none, delay=0.04, delays=0.01/0.01/0.02/0, dsn=5.4.6, status=bounced (mail for epiphany.johnnystork.ca loops back to myself)
Aug 12 12:41:15 epiphany postfix/cleanup[16502]: 0155D7D0001: message-id=<20100812194115.0155D7D0001@epiphany.johnnystor k.ca>
Aug 12 12:41:15 epiphany postfix/bounce[16506]: EAC837D000B: sender non-delivery notification: 0155D7D0001