These instructions require access through SSH. Please see this article for assistance in connecting via SSH:

How To Connect With Putty Via SSH

General DNS Information:

     dig yourdomain.com

MX Record lookup:

    host –t mx yourdomain.com
    dig mx yourdomain.com

SPF Record lookup:

    host –t txt yourdomain.com

DNS tree:

    dig +trace yourdomain.com

Registrar and Name Server lookup:

    whois yourdomain.com

Test Server Connections on a Specific Port:

    telnet yourdomain.com 21