[CentOS] sendmail

Mon Oct 2 21:21:43 UTC 2017
Larry Martell <larry.martell at gmail.com>

I an running CentOS7 in a docker container. I need to send email from
that container so I installed sendmail and then I run:

m4 /etc/mail/sendmail.mc > /etc/mail/sendmail.cf` and when I try and
send mail it fails with:

larry.martll at gmail.com... Connecting to [] via relay...
larry.martll at gmail.com... Deferred: Connection refused by []

Anyone know how I can configure sendmail so that I can send mail?