Please help me i'm going bonkers.

Postfix keeps queueing all my inbound messages. It just recently started to do this. I don' t know what happened. I have checked the logs and this is what i see:

fatal: open database /etc/postfix/aliases.db: Permission denied
Feb 12 15:16:57 shadowfax postfix/nqmgr[29836]: warning: premature end-of-input from private/local socket while reading input attribute name
Feb 12 15:16:57 shadowfax postfix/nqmgr[29836]: warning: private/local socket: malformed response
Feb 12 15:16:57 shadowfax postfix/nqmgr[29836]: warning: transport local failure -- see a previous warning/fatal/panic logfile record for the problem description
Feb 12 15:16:57 shadowfax postfix/master[29832]: warning: process /usr/libexec/postfix/local pid 29900 exit status 1
Feb 12 15:16:57 shadowfax postfix/master[29832]: warning: /usr/libexec/postfix/local: bad command startup -- throttling
Feb 12 15:16:57 shadowfax postfix/nqmgr[29836]: warning: premature end-of-input from private/local socket while reading input attribute name
Feb 12 15:16:57 shadowfax postfix/nqmgr[29836]: warning: private/local socket: malformed response
Feb 12 15:16:57 shadowfax postfix/nqmgr[29836]: warning: transport local failure -- see a previous warning/fatal/panic logfile record for the problem description
Feb 12 15:16:57 shadowfax postfix/master[29832]: warning: process /usr/libexec/postfix/local pid 29901 exit status 1

I checked the file permisisons on all of the files in the /etc/postfix dir. all files are root.root.

Please help.