Hmmm...
Thank you again for in-deep explanations. Regarding to all this new knowledge it seems better to distinguish between my existing "mydomain" setup on location2 and Zimbra installation on Location1.
Location2 is my own quite complex web hosting solution with even more complex AntiSpam and mail solution, consisting of:
- 2 web servers, 2 *SQL servers
- 1 local DNS and 3 geographically spread DNS servers
- 1 local MAIL server and 6 redundant MAIL proxy filters with antispam and antivirus
Location 1 with ZIMBRA was meant to be new MAIL server, which would RECEIVE mail only from those 6 redundant MAIL PROXY servers.
All mail servers, existing and new ZIMBRA, are to host many different domains! So I gave ZIMBRA server host name by sub-domain of my primary domain.
So I assume it should work, if ZIMBRA locally would resolve ITSELF by A and MX record:
Code:
zimbra.mydomain.com. 3600 IN A 10.1.1.126
zimbra.mydomain.com. 3600 IN MX 10 zimbra.mydomain.com.
But this would be only for installation issue, since REAL mail for "mydomain.com" will not be configured to travel to ZIMBRA server...at least not at the beginning (maybe later, when things prove to be stable)