I have such a problem. I have locoal domain with Windows 2008 (company.local). We have external mail system provided by ISP (i.e. pup.company.pl), which we want to use, too. Now I want to set zimbra system for tests as post.pup.company.pl. DNS settings are done thru ISP panel. When I am setting zimbra in domain company.local, then adding second domain (post.pup.company.pl) via admin console, everything's working, we are getting mails from internet to i.e. email@example.com. But it then impossible to bind users' passwords from Active Directory to Zimbra (it only works for company.local). How can I fix it?
Second situation: after reinstall I set zimbra domain as post.pup.company.pl. But at install stage I have errors with no MX records for domain post.pup.company.pl.
When I look zimbra.log, mail system is getting mails from world, but not forwarding to mailboxes. Sending of mails is possible. How can I fix it?
Best regards, P.