On 11.10.2016 10:43, Juha Koho wrote: > > On 2016-10-11 09:18, Aki Tuomi wrote: >> On 11.10.2016 10:13, Juha Koho wrote: >>> Hello, >>> >>> I have a Dovecot 2.2.25 set up with OpenLDAP back end. I was trying to >>> set up a GSSAPI Kerberos authentication with the LDAP server but with >>> little success. Seems no matter what I try I end up with the following >>> error message: >>> >>> dovecot: auth: Error: LDAP: binding failed (dn >>> (imap/host.example....@example.com)): Local error, SASL(-1): generic >>> failure: GSSAPI Error: Unspecified GSS failure. Minor code may >>> provide more information (No Kerberos credentials available (default >>> cache: FILE:/tmp/dovecot.krb5.ccache)) >>> >>> I have set the import_environment in dovecot.conf: >>> >>> import_environment = TZ CORE_OUTOFMEM CORE_ERROR LISTEN_PID LISTEN_FDS >>> KRB5CCNAME=FILE:/tmp/dovecot.krb5.ccache >>> >>> And these in LDAP configuration: >>> >>> dn = imap/host.example....@example.com >>> sasl_bind = yes >>> sasl_mech = gssapi >>> sasl_realm = EXAMPLE.COM >>> sasl_authz_id = imap/host.example....@example.com >>> >>> I have tried with different values in dn and sasl_authz_id and also >>> leaving them out completely but I always end up with the error message >>> above. Using simple bind without GSSAPI works just fine. >>> >>> The credentials cache file exists and is valid for the principal >>> imap/host.example....@example.com. The file is owned by dovecot user >>> so it shouldn't be a permission problem either. >>> >>> GSSAPI in OpenLDAP works but I suppose it is irrelevant here since the >>> connection attempt never reaches the LDAP server due to the error. I >>> also have similar setup for Postfix and it works fine. >>> >>> Any ideas what to try next? >>> >>> Best regards, >>> Juha >> >> Can you provide klist output for the cache file? Also, it should be >> readable by dovenull user, or whatever is configured as >> default_login_user. > > > Here's the klist output of the cache file: > -- > Ticket cache: FILE:/tmp/dovecot.krb5.ccache > Default principal: imap/host.example....@example.com > > Valid starting Expires Service principal > 10/11/2016 09:26:25 10/11/2016 21:26:25 krbtgt/example....@example.com > renew until 10/12/2016 09:26:25 > --- > > That I didn't know that also dovenull must have access to the cache > but I tried also setting 0644 permissions to the cache file with no > luck. So permissions shouldn't be the issue... > > Juha
Your ccache has no ticket for imap/host.example....@example.com please use kinit to acquire one. Aki