Deploing CentOS 7 with postfix, MailScanner, spamassassin, ClamAV as SMTP gateway

In this blog we will look into building smtp scanner gateway based on Postfix, Mailscanner , spamassassin and clamav. In this example we have CenOS 7 minimal deployed on the internal network. Perimeter firewall is setup with NAT translating public IP port 25 to internal mailscanner gateway 192.168.0.5. Internal Mail server itself can run any…