Troubleshooting a CentOS 7 Server Setup

This article is a collection of troubleshooting steps I performed in getting a perfect CentOS 7 email and web server built. This is a living document that will be revised over time. Mail

/var/log/maillog: postfix/sendmail[26861]: fatal: open /etc/postfix/  Permission denied
  • Possible selinux issue:
     setsebool -P httpd_can_sendmail=1

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