On Windows 2003 server/xp, the manual (NTP) mode of the windows time service CLIENT has a "SpecialPollInterval" which allows you to set a custom poll interval instead of what the OS decides.
I've been going through the MS docs on the registry settings for WTS here: http://technet.microsoft.com/en-us/library/cc773263(WS.10).aspx
It doesn't look like specialPollInterval works on NT5DS (domain hierarchy) mode. Is there something similar in this mode?
If not, how often will Windows poll for the correct time when the wts client is set domain hierarchy mode?