Postfix is a Mail Transport Agent (MTA) responsible for the transfer of e-mails between mail servers using the SMTP protocol. In this article I will share the steps to configure postfix mail server and client using postfix SMTP relay along with some examples to check SMTP server check configuration and connection in CentOS/RHEl 7/8 Linux. … Continue reading Configure postfix mail server and client with examples (CentOS/RHEL 7/8)