MX Record Check This test will do a DNS lookup on the particular domain name you enter. It will check the priority and systems that are listed as inbound MX hosts for your server. Generally large providers do not use the same server for both inbound and outbound SMTP, so if you are looking to see if your SMTP server is blacklisted, go here. Enter: (e.g. mailcloud.net)   : Domain Name   Inquire for a custom quote on custom rack setups and bandwidth options. Email: info(@)mailcloud.net