Before you change your MX records in order to direct your mail to the SpamTitan Cloud servers we recommend that you test to make sure your mail server will accept mail from the SpamTitan Cloud servers. This is very easy to do.
Log on to the SpamTitan Cloud server using your domain group administrator credentials. Go to Settings > Relay Settings and click on the check/correct icon highlighted below:
This will open the following window allowing you to specify an email address to send a test mail to:
Enter an email address and click send and then check to see if the mail was received.