I am an end user and I have several domains with their respective e-mail accounts which I manage myself.
I have signed a contract with a large multinational which is allowing me to use one of their domain names (let's call it multinational.com)and associated e-mail (firstname.lastname@example.org), however the web site must be hosted on their servers and they do not wish to manage the e-mails.
They have told me "tell me where to point the MX"...
My question: if I give them the MX of one my current domains, will I be able to send mails with the @multinational.com address? or will I be limited to the @mydomain.com to which it is pointed?
If this were possible how should the MX records be written, would it be:
multinational.com MX 10 mydomain.com
Thanks for your help because as you can probably guess I am quite confused.