Can postgres be configure for GSS/Kerberos authentication without a keyfile?

Can postgres be configure for GSS/Kerberos authentication without a keyfile?

I have Kerberos working
I compiled postgres with -with-gssapi
I've setup the pg_hba.conf with gss and my IP address
I'm not sure what to put in the postgres.conf

I can do a kinit buckwheat(dot)johnson(at)SOME_EXAMPLE(dot)COM<mailto:buckwheat(dot)johnson(at)SOME_EXAMPLE(dot)COM> - and it correctly validates against an AD server
My klist is as follows
-------------------------------------------
[root(at)mbr01 postgresql-9.1.3]# klist
Ticket cache: FILE:/tmp/krb5cc_0
Default principal: buckwheat(dot)johnson(at)SOME_EXAMPLE(dot)COM

Valid starting Expires Service principal
04/04/12 08:41:28 04/04/12 15:21:28 krbtgt/SOME_EXAMPLE(dot)COM(at)SOME_EXAMPLE(dot)COM

Kerberos 4 ticket cache: /tmp/tkt0
klist: You have no tickets cached
-----------------------------------------------------

I'm getting a error on the Linus CentOS server side
FATAL: GSSAPI authentication failed for user "buckwheat.johnson"

The error I'm getting on my windoz client is
psql: SSPI continuation error: The specified target is unknown or unreachable
(80090303)

Do I have to set the "krb_server_keyfile" in the postgres.conf? If not do I have to set any krb5 postgres.conf parameters?

--
Eric (alias buckwheat)

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