First: I have been using ISPConfig the last four years (2x) and the upgrade to 3x was a BIG upgrade in a pleasant way
Now. I have been trying to figure out what the purpose of "mirror server" is. By reading different threads there its not obvious for me the purpose and I was hoping that someone could explain it a bit.
* Should it be seen as a copy of the ISP config DB?
* Should it be seen as a slave to DNS functions? (Transfer)
* Should it been seen as a "hot stand-by" to the http/mysql functions?
* Should it be considered as an slave to Mail functions (Alternative MX)
This would help me setup my infrastructure. My original planning included for example external DNS servers (not part of ISP config) as well as additional webservers (part of isp config)
I have been trying to replicate DNS zones on the "mirror server" without success. But i'm not sure how its handled in the background (rsync, xfer etc)
Any guidance would be helpful