Install dovecot IMAP server on RHEL7
This article will show you how to install and configure dovecot on RHEL 7, dovecot is IMAP server to receive emails from other SMTP server
email server
RedHat 7 install and configure postfix
This article will show you how to install and config postfix as SMTP server on Redhat 7, the goal is to run your own email server
Create DNS records for your email server
This article to show you how to create DNS record for email server domain.