When we tried to stop and start postfix as zimbra user we got the following warning. Is there anything wrong?

zimbra@zimbra:~$ postfix start
postfix/postfix-script: warning: not owned by root: /opt/zimbra/postfix-2.7.5.2z/conf/main.cf
postfix/postfix-script: warning: not owned by root: /opt/zimbra/postfix-2.7.5.2z/conf/master.cf
postfix/postfix-script: warning: not owned by root: /opt/zimbra/postfix-2.7.5.2z/conf/master.cf.in
postfix/postfix-script: warning: not owned by root: /opt/zimbra/postfix-2.7.5.2z/conf/transportfile
postfix/postfix-script: warning: not owned by root: /opt/zimbra/postfix-2.7.5.2z/conf/transportfile.db
postfix/postfix-script: starting the Postfix mail system


Please help

Thanks
britto