nfs and rpc authentification error?

[bryan wright]

Hi folks,

	I'm having a problem with nfs, and I'm hoping someone out there can
show me a way
to get rid of it.   I have a DECstation 5200 running Ultrix 4.0, and I'm
trying to get it to nfs
mount a pair of file systems on a DS3100, also running 4.0.   The 3100
is behaving fine otherwise,
and these file systems are successfully mounted by a third machine
(another 3100).   The
5200, however can't mount these two file systems.  When I type 'mount -a
-t nfs' I get:

server not responding: rpc authentification error; why = bad credentials

The server machine has mountd running with no qualifiers (no -i, -d or
-s) and the /etc/exports
file leaves the hostname field blank, so that anyone who wants to should
be able to mount
these filesystems.

	The problems began shortly after I began running BIND on the machines and,
though I've checked the /etc/rc.local, /etc/svc.conf, /etc/exports,
/etc/fstab and ... well,
etc., I still wonder if the problem has something to do with BIND.  Any
suggestions
would be greatly appreciated.


				Thanks,
				Bryan.