How to receive root generate mail in zimbra Mailserver to specific account
You can edit file /opt/zimbra/postfix-2.7.10.3z/conf/aliases and enable below parameter for receiving root generated mail to the specified account.
Login to zimbra user
#su - zimbra
$vim /opt/zimbra/postfix-2.7.10.3z/conf/aliases
root: shahzad@example.com
Reload Postfix to take affect
$postfix reload
Login to zimbra user
#su - zimbra
$vim /opt/zimbra/postfix-2.7.10.3z/conf/aliases
root: shahzad@example.com
Reload Postfix to take affect
$postfix reload