We didn't do anything that has something to do with your MX Record or email set up. When we connected the Domain to the BookingSuite, what we did was we point the A record and C name to our server records. Please note that BookingSuite hosted only your web content and we have nothing to do with your email hosting. But if you could give us your MX record and we can assist you in setting it up as well.
We are looking forward to hear from you soon.