# After installation:

$zimbra-status

Starting mta...FAILED
postmap: fatal: file /opt/zimbra/postfix-2.2.9/conf/main.cf: parameter mail_owner: unknown user name value: postfix
postalias: fatal: file /opt/zimbra/postfix-2.2.9/conf/main.cf: parameter mail_owner: unknown user name value: postfix
postfix failed to start