By using the trust relationship between to Master and Slave Server. I need some advise ... like - If there is alot (about 800 - 1000) of dns zone file at the master server will it cause any problem to the master server anot ... as from what I know, is that whenever the slave server (Second Server) create a new account it will auto add a dns zone file to the master server (Main Server) right. Normally is there a limit of DNS Zone file a Server can handle and will it cause any problem. Can anyone advise me on this problem ... Thank You very much.