Apple: How can I revert my etc/postfix/main.cf file?

6:02   Postfix Configuration - main.cf 2:53   postfix: warning: /etc/postfix/main.cf, line 690: overriding earlier entry:... 4:49   Main.cf file configuration 1:47   wp-cli core install unknown: fatal: file /etc/postfix/main.cf: parameter mail_owner: user... 9:24   postfix and mailutils installation/setup 2:40   In Postfix, Should SSL FQDN Matches with myhostname or mydomain field in /etc/postfix/main.cf? 9:18   Linux Postfix Basics openSUSE 11.2 3:53   Test postfix message mailbox size limit using mail client CLI mutt 7:54   Postfix configuration on ubuntu | for local host mailing 1:44   Linux Postfix Troubleshooting KodeKloud Engineer 5:31   Sendgrid Postfix Installation 4:34   04 Basic Postfix Configuration 2:43   Use /etc/aliases for outgoing mail relayed by postfix with local domain (3 Solutions!!)