Setting up Drupal 8 SMTP module to send through my GMail account.
It failed every time I tried testing it with an error complaining about connecting to the server. Turns out selinux was getting in the way.
To allow Apache to send emails, I first verified selinux was in the way.
>sudo sestatus -b | grep -i sendmail httpd_can_sendmail off logging_syslogd_can_sendmail off
To turn "on/off" the flag