Change dns setting to bind zimbra internal server

[quuengab]

Hi to all,

i'm gabriele from rome. I contact you for a great problem for me.
I have to move only the domain from a provider to another.
My friend have also a zimbra internal server (webmail.domain.it) that actually respond to the dns of the first provider.
When i move the domain and so the server address which passes occurs to set zimbra new external address?

I don't have experince about dns but i have some knowledge about apache. But in this case i don't find a solution..

Thanks
gabriele