I inserted whitelist_from *@domain.com /opt/zimbra/conf/salocal.cf.in file.
Then I received the following warning message
2 not owned by root: /opt/zimbra/postfix-188.8.131.52z/conf/main.cf--------
postfix-script (total: 10)
2 group or other writable: /opt/zimbra/postfix-
2 not owned by root: /opt/zimbra/data/postfix/spool
2 not owned by root: /opt/zimbra/postfix-184.108.40.206z/conf/master.cf
2 not owned by root: /opt/zimbra/postfix-220.127.116.11z/conf/master.cf.in
How to solve this
They are informational messages, they can be ignored.
If you search this forum you'll find several threads describing these warnings.
Try running as root:
/opt/zimbra/libexec/zmfixperms --verbose --extended
But i don't think these warnings will disappear.
Just ignore them.