Dear all

I have a zimbra mail server on my DR site that a second MX record is pointing to this server. My first mx record is pointing to my first zimbra mail server to my production site. What id like to achieve is, in case my primary zimbra mail server is down, all e-mails through the second mx record will be relayed to my DR site zimrbra server. So all users will be able to see their new emails thorough web. My question is, if it is posible all e-mails that arrives to Zimbra dr server additionally to be forwarded to my primary mail server , so when it comes online to receive the new e-mails.
Thanks in advanced