When I run ntpdate on its own, I get the following output:

8 Jun 15:47:46 ntpdate[31251]: no servers can be used, exiting

If I run it with the -q ntp.ubuntu.com switch, it seems to query just fine.

I have been hunting through many files and the most relevant one I have found is /etc/default/ntpdate, however, even with NTPDATE_USE_CONF set to no, I just can't understand/see how this error is occurring

Any ideas?

Update--

It appears that ntpdate-debianworks fine and is the actual command that makes use of /etc/default/ntpdate, but this doesn't answer the main question and I still can't find it...