FTP - GSSAPI Error acquiring credentials

[Pierre Goyette]

I have a Solaris box with MIT Kerberos 1.3.3 installed as an application
server which is part of a Windows 2000 KDC.
 
I can perform a kerberized telnet to the box perfectly. However, I
cannot ftp to the box. In my system log (and I enabled debugging for
ftpd), I see:
 
Jun  8 12:51:04 ultra ftpd[1062]: [ID 291755 daemon.info] importing
<ftp at ultra>
Jun  8 12:51:04 ultra ftpd[1062]: [ID 291755 daemon.info] importing
<host at ultra>
Jun  8 12:51:04 ultra ftpd[1062]: [ID 399347 daemon.error] gssapi error
acquiring credentials

A Ethereal trace shows the client receiving a 501-GSSAPI error minor: no
principal in keytab matches desired name.
 
ktutil on the host shows:
 
# ktutil 
ktutil:  rkt /etc/krb5.keytab
ktutil:  l
slot KVNO Principal
---- ----
---------------------------------------------------------------------
   1    1
host/ultra.mtlw2ktest.montreal.hcl.com at MTLW2KTEST.MONTREAL.HCL.COM
   2    1
ftp/ultra.mtlw2ktest.montreal.hcl.com at MTLW2KTEST.MONTREAL.HCL.COM

On my client, I properly acquire all the right tickets, klist -e shows:
 
Ticket cache: API:krb5cc
Default principal: pierre at MTLW2KTEST.MONTREAL.HCL.COM
Valid starting Expires Service principal
06/08/04 08:01:18 06/08/04 18:01:18
krbtgt/MTLW2KTEST.MONTREAL.HCL.COM at MTLW2KTEST.MONTREAL.HCL.COM
renew until 06/15/04 08:01:18, Etype (skey, tkt): ArcFour with HMAC/md5,
ArcFour with HMAC/md5
06/08/04 12:04:48 06/08/04 18:01:18
host/ultra.mtlw2ktest.montreal.hcl.com at MTLW2KTEST.MONTREAL.HCL.COM
renew until 06/15/04 08:01:18, Etype (skey, tkt): DES cbc mode with
RSA-MD5, DES cbc mode with RSA-MD5
06/08/04 12:05:47 06/08/04 18:01:18
ftp/ultra.mtlw2ktest.montreal.hcl.com at MTLW2KTEST.MONTREAL.HCL.COM
renew until 06/15/04 08:01:18, Etype (skey, tkt): DES cbc mode with
CRC-32, DES cbc mode with CRC-32 
Kerberos 4 ticket cache: API:krb4cc
 
On my FTP client, I tried using either 'host' or 'ftp' as the GSS
Service Name and still get the same error.
 
What could be the problem?
 
TIA,
 
Pierre Goyette