I use expert mode to install the second server, then linkup the first server's database. I now can control the second server from the first's interface. But I cannot add the dns new domain which first server already have. It said the domain already here. The one I want is, the second server be the slave dns server which means the record shold exactly the same with the first one.
The current ISPConfig version does not support mirroring. Currently you can configure multiple servers but you can not mirror the settings as e.g. used for dns. The next release will support mirroring.
See: http://bugtracker.ispconfig.org/ The new release will be available when all features in the roadmap have been implemented. Most likely somewhere between december and february.
