mail stuck in postfix incoming directory

[Harondel J. Sibble]

So one of the machines in the field stopped sending or receiving emails, 
actually it receives them fine from both internal (exchange) and externally, 
but they don't leave the mailscanner box.  

/var/spool/postfix/incoming

has all the emails that have come to the box since yesterday afternoon.

Maillogs show

  
Jun 12 11:05:23 mailscannersys postfix/qmgr[8414]: fatal: qmgr_move: update active/message time stamps: Operation not permitted
Jun 12 11:05:24 mailscannersys postfix/master[8107]: warning: process /usr/libexec/postfix/qmgr pid 8414 exit status 1
Jun 12 11:05:24 mailscannersys postfix/master[8107]: warning: /usr/libexec/postfix/qmgr: bad command startup -- throttling
Jun 12 11:06:24 mailscannersys postfix/qmgr[8417]: fatal: qmgr_move: update active/message time stamps: Operation not permitted
Jun 12 11:06:25 mailscannersys postfix/master[8107]: warning: process /usr/libexec/postfix/qmgr pid 8417 exit status 1
Jun 12 11:06:25 mailscannersys postfix/master[8107]: warning: /usr/libexec/postfix/qmgr: bad command startup -- throttling

this is a centos 4.8 box and was running fine until this occurred yesterday.  
Googling seems to indicate permission errors, however when I compare

/var/spool/postifx and subdirectories with another working, box, all looks 
correct, suggestions?

I've had a chat with the new onsite admin and he swears the only change made 
recently was to add a line to allow word docs with double periods in 

/etc/MailScanner/filename.rules.conf

other than that, no other changes.
-- 
Harondel J. Sibble 
Sibble Computer Consulting
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