On 06/09/18 20:15, Larry Martell wrote: > When I try and send mail I see this in the maillog: > > Sep 6 11:59:48 postfix/sendmail[11059]: fatal: open > /etc/postfix/main.cf: Permission denied > > But /etc/postfix/main.cf is world readable: > > $ ls -l /etc/postfix/main.cf > -rw-r--r--. 1 root root 27176 Jun 9 2014 /etc/postfix/main.cf How are you trying to send mail? Is it by chance through a web based application? If so, you may need to set the SELinux boolean httpd_can_sendmail. Otherwsie, check/restore default SELinux labelling for /etc/postfix/main.cf