hmmm, okay if you are able to then
Code:
su - zimbra
zmcontrol shutdown
exit
cd /opt/zimbra/data/postfix/spool/pid
rm *
su - zimbra
zmcontrol start
basically clear out the pid directory as they should be owned by postfix, for some reason when something has started before they have been created as root.
*** DISCLAIMER: when doing rm's make sure you are in the correct directory and have a good backup!!! ***