[CentOS] [Off topic] sending mail from Comcast was: Sendmail not working

Sun Apr 19 20:05:27 UTC 2020
Richard <lists-centos at listmail.innovate.net>

> Date: Sunday, April 19, 2020 13:47:32 -0600
> From: "S.Bob" <sbob at quadratum-braccas.com>
> my relay will be smtp.fastmail.com and it requires authentication
> and SSL, are there added settings in main.cf that will allow this?

What port is that delivering to -- that doesn't sound like port 25,
which is the default that an MTA delivers to.

The postfix list may be a better place to ask these configuration
questions. The general expectation there is that one has spent time
going through the documentation.