Adding google mail capability / CNAME

[snclucas]

Hi

I would like to use google mail as my domain mail handler but it requires me to do some cname additions. It needs me to add a cname entry so that say mymail.domain.com points to a goole server.

But when I add the new cname within the damain area in plesk nothing happens and I just get redirected back to the root domain. Do I need to add this cname entry in the DNS of my registrar instead (in my case 123 reg) or both ?

Thanks for your help

Simon