I am trying to get GSSAPI authentication working with an SMTP server on from a 
Mac 10.4.7 client. I'm using the stock Perl installation (5.8.6), and I 
manually installed GSSAPI-0.23 & Authen-SASL-2.10. I made a minor edit to 
Net::SMTP to print out the $client->error contents (since it was failing), and 
I'm getting the following when the Debug option is used with Net::SMTP:

Net::SMTP=GLOB(0x1877e40)<<< 334 GSSAPI supported
Premature end of base64 data at /System/Library/Perl/5.8.6/Net/SMTP.pm line 151.
Authen::SASL::Perl::GSSAPI=HASH(0x180e690): GSSAPI Error : A token was invalid
No error

Net::SMTP=GLOB(0x1877e40)>>>
Net::SMTP=GLOB(0x1877e40)<<< 334 
YGwGBisGAQUFAqBiMGCgMDAuBgkqhkiC9xIBAgIGCSqGSIb3EgECAgYKKoZIhvcSAQICAwYKKwYBBAGCNwICCqMsMCqgKBsmc2NmLWd3eS0wMSRAUkVETU9ORC5DT1JQLk1JQ1JPU09GVC5DT00=
Authen::SASL::Perl::GSSAPI=HASH(0x180e690): GSSAPI Error : A token was invalid
No error

Net::SMTP=GLOB(0x1877e40)>>>
Net::SMTP=GLOB(0x1877e40)<<< 535 5.7.3 Authentication unsuccessful.


Is this a known issue? Is there something I can do to debug this further? I 
cannot tell whether I'm having problems authenticating or it's having problems 
parsing the data... I can acquire the service ticket for "[EMAIL PROTECTED]" 
via kvno, so I'm guessing it is some other issue.

Please reply also to me, as I am not subscribed to this e-mail list.

Thanks in advance,
nh

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