Occassionally it may be necessary to restart all your services in GMS to apply configuration changes or to see if it resolves a problem you are having.
Be aware that this will breifly remove access to your server for your users, so for configuration changes you may wish to do this during a quiet time or out of hours.
To restart services, open an administrator command prompt (see how to open an administrator command prompt) then use the cd command to change to the Gordano\bin directory.
From here you will run the command
mail -stop
Then the command
mail -start
Your command line output should look like this:
Your services have now been restarted.