How to set default domain name in zimbra

Set default Domain name in Zimbra

Login with zimbra user
# su - zimbra
$ zmprov mcf zimbraDefaultDomain domain.com
Example:
 $ zmprov mcf zimbraDefaultDomain example.com

How to check default Domain name in Zimbra
$  zmprov gacf | grep -i zimbraDefaultDomain
zimbraDefaultDomainName: example.com