I have a linode set up with Centos 7.
I have had problems with mail servers in the past. I elected to set up email with Google Apps. I used the guide in your resource section and set up the MX records on the linode DNS system.
I am receiving email to my new business gmail name: firstname.lastname@example.org
but it is not sending email even through the google system. I only need to send email as a setup for things like discussion forums, not receive, just send for verification.
What do I need to set up on my linode?
Mail servers are frustrating.