I've installed BIND 9.5.2-P1 running in Windows Server 2003. There is 1 master server and 1 slave server. i already have master that work well for our zones. The problem is my slave server didn't update from master automatically. But all the zone files and .conf file was transferrenred to the slave when i set set the slave server in the beginning. i'm new to the study of DNS and just practising for a month only.Please help me out in this. Is there any software that i should load in my slave server for it to update automatically? Or is there any command i have to add to do the updation. i want to update automatically.

**The following is my master configurations:**

```
  options {

  directory "c:\named\zones"; 

  recursion no;

  notify yes;

  };

  zone "mydns.com" IN {

  type master;

  file "db.mydns.com.txt";

  };

```

**The following is my slave configurations:**

```
  options {

  directory "c:\named\zones";

  recursion no;

  };

 zone "mydns.com" IN {

  type slave;

 file "bak.db.mydns.com.txt";

 masters { 192.168.0.17 ; };

 };

```