Last week changed our servers to NTP - no problem everything worked.

Then upgraded to NW6.5 SP7 (OES2) but had to leave our BorderManager server at SP6 because there are no iManager plugins for BM on SP7. The Border Manager server is taking time from another internal NW server (

Now we get

xntpd is unable to service time requests from
Ensure that you have a valid key for this operation.

on the BorderManager (SP6) server.

Where does the key come from?