Zimbra Release 8.0.1.GA.5438.UBUNTU12.64 UBUNTU12_64 FOSS edition.

In this moment my configuration is:
if account is @domainlocal.com sending with local zimbra else sending with relay externat that connect with my ISP.

I would like configurate a account with domain local, for example user@domainlocal.com to sending with relay external.

Can you help me please.

Thank you!!!