On Sun, September 30, 2012 13:31, James B. Byrne wrote:
The error is this:
postfix: fatal: file /etc/postfix/main.cf: parameter mail_owner: unknown user name value: postfix
You are missing the postfix user id in /etc/passwd. If that user id is missing then it is likely that your install procedure did not complete properly. I would suggest using yum remove post followed by yum install postfix issued as the root user from the command line.
s/b yum remove postfix; yum install postfix