Change MaxPageSize value to 3000 (default 1000)
C:\Temp\x>type change.txt
dn: CN=Extended Timeout,CN=Query-Policies,CN=Directory Service,CN=Windows NT,CN=Services,CN=Configuration,DC=X
changetype: add
instanceType: 4
lDAPAdminLimits: MaxPageSize=3000
objectClass: queryPolicy
C:\Temp\x>ldifde -i -f change.txt -v -c DC=X "DC=domena,DC=cz"
Connecting to "server1.domena.cz"
Logging in as current user using SSPI
Importing directory from file "change.txt"
Loading entries
1: CN=Extended Timeout,CN=Query-Policies,CN=Directory Service,CN=Windows NT,CN=Services,CN=Configuration,DC=domena,DC=cz
Entry modified successfully.
1 entry modified successfully.
The command has completed successfully
http://support.microsoft.com/default.aspx?scid=kb;en-us;315071&sd=tech