Please share your thoughts on below scenario and let me know if this would be possible.
My domain is say example.com, installed on zCS 7.2.1 with. I am planning to add backup MX server which will be a store,forward kindaa setup. Now, at the second MX server I can only install postfix and configure recipient_maps through LDAP to fetch from Primary server.
1. Can I simply install postfix and then configure to fetch the accounts from primary server specified using method stated above to save from becoming SPAM Trap?
2. That way I believe I don't need to maintain recipient_maps on other server since the entries are being fetched from primary server [through LDAP] which eventually will always be in SYNC?
3. Or Do I need to install complete zimbra server to achieve the above scenario?