MTA on CentOS 7.2 Switch from Console to root

[Rob0]

How would i switch from seeing MTA console on linux server to go back to root to do other things then back to MTA without exiting MTA?

[Mr_Moose]

You need to install a package called screen:

yum install screen
screen -S MTASA
screen -ls
screen -r <ID_OF_MTASA>

Once you're connected to the screen session you can disconnect using CTRL+A then D and reconnect later using the last of above commands, also don't run your server as root, it doesn't need root privileges to run and it could be insecure if you load a suspicious resource or if someone else manage to take control over your server.