Send through External smtp server

[mmi]

Hello,

I have installed a local zimbra server for local email use. Except the local use there is an external domain that I need to manage through this zimbra server. For example I have the domain test.com that is setup in cpanel account.

I created a domain in zimbra test.com and create a user user@test.com with the same password as in cpanel. I configured settings in preferences of this account to retrieve the emails from cpanel with pop3.

What I need is when I send emails from this domain to use the cpanel server smtp settings and not the local zimbra server. How I can implement this?

Thanks in advance.