As I don't host my domain with 1and1, I only bought the domain through them. So I have my domain set up with alternative name servers to point to my server, rather than using 1and1's own DNS.
But then 1and1 won't allow me to amend my MX records. They can only change the MX records if I use their name servers.
So does this mean I can't use Zoho to receive and send mail addressed to me@mydomain ?