G'mornin!

I have four NW6.5 sp5 servers in my tree, called A, B, C, and D. Two of
them are synchronised, and two are getting further and further apart.

I'm using xntpd for Timesync, and have the following layout:

A gets it's time from the university's Stratum 2 NTP servers and has an
NTP.CONF containig

# Time Provider
# server <IP Address>
#
server NTP0.OX.AC.UK
server NTP1.OX.AC.UK
server NTP2.OX.AC.UK
server NTP3.OX.AC.UK

broadcast 255.255.255.255 key 0

Servers B C and D are Time Consumers of A, with

# Time Provider
server 129.67.111.250 prefer

(The IP address of Server A) in their NTP.CONF files.

DSREPAIR reports that Servers A and B are time-synchronised, while C is
-21 seconds and D is +9 seconds out. Each has widened their gap over the
weekend.

All three time consumers have XNTPD reporting the following error:

xntpd is unable to service the time request from 129.67.111.250.
Ensure that you have a valid key for this operation.
receive: untrusted keyid

What's going wrong with servers C and D?

Cheers,
--
James Dore,
New College IT Officer
it-support@new/james.dore@new
http://www.new.ox.ac.uk/