[Dovecot] GSSAPI auth failing for kmail

[Timo Sirainen]

On 27.2.2012, at 12.50, Mark Davies wrote:

> On 02/27/12 23:32, Timo Sirainen wrote:
>> Looks like kmail is sending some kind of garbage to Dovecot. Set
>> auth_debug_passwords=yes to make Dovecot log the auth traffic.
> 
> Yeah, I did a network trace and it seems kmail is not sending the
> full authentication request before trying to carry on.

>> 8	0.043625	130.195.5.88	130.195.5.13	IMAP	898	Request: 1 AUTHENTICATE GSSAPI YIICWgYJKoZIhvcSAQICAQBuggJJMI[...]jLyNiRZFsc9zFxpdwrZAB/WXRRS1zsM4SlDfE59CW1xfKAkqe

It uses SASL-IR to send the first seponse.

>> 9	0.044919	130.195.5.13	130.195.5.88	IMAP	70	Response: + 

Dovecot says "OK, give me more".

>> 10	0.045413	130.195.5.88	130.195.5.13	IMAP	80	Request: 2 LIST "" ""

kmail thinks the authentication is done and sends LIST command, even though it should finish the authentication. Clearly a kmail bug.

You could try what happens if you remove SASL-IR from Dovecot's imap_capability list. Maybe kmail is buggy only with SASL-IR.