This looks like your samba4 configuration /kdc is not running.
To look further try:https://wiki.samba.org/index.php/Samba4/HOWTO.
First of all your Samba4 must be running.
Special there ex::
Step 8: Configure Kerberos
Kerberos configuration is handled by the krb.conf file. This file is typically
located in the /etc directory, please refer to your distribution documentation
for the location of this file on your system. Replace the existing file, if
any, with the sample from /usr/local/samba/share/setup/krb5.conf. Edit the file
and replace ${REALM} with the value you chose for the --realm parameter of the
provision command above, make sure to enter the realm in uppercase letters:
[libdefaults]
default_realm = SAMDOM.EXAMPLE.COM
dns_lookup_realm = false
dns_lookup_kdc = true
Testing Kerberos
The simplest test is to use the kinit command as follows:
$ kinit administra...@samdom.example.com
Password:
Note: You must specify your domain realm SAMDOM.EXAMPLE.COM in uppercase
letters
kinint will not give you any output. To verify that Kerberos is working, and
that you received a ticket, run the following:
$ klist
Ticket cache: FILE:/tmp/krb5cc_1000
Default principal: administra...@samdom.example.com
Valid starting Expires Service principal
02/10/10 19:39:48 02/11/10 19:39:46
krbtgt/samdom.example....@samdom.example.com
Good Luck
Daniel
-------- Original-Nachricht --------
> Datum: Fri, 16 Nov 2012 10:46:22 +0300
> Von: David Ssali <d...@telematicgroup.com>
> An: users@sogo.nu
> Betreff: Re: [SOGo] Outlook and Openchange Issues
> Thanks Daniel.
> This error keep on coming up in my samba log file
>
> samba_dnsupdate: RuntimeError: kinit for WEB$@ECOM2M.NET failed (Cannot
> contact any KDC for requested realm)
>
> What could be the cause of that? I followed the installation guide given
> by SOGo word by word and i don't know how to fix this.
> On 11/16/2012 10:30 AM, "Daniel Müller" wrote:
> > No, you do not need ldap with openchange. Openchange/Samba4 has its own
> cldap. As if you were auth against Microsoft ADS. You just need to set
> authentication the right way in your sogo configuration.
> > -------- Original-Nachricht --------
> >> Datum: Fri, 16 Nov 2012 09:58:51 +0300
> >> Von: David Ssali<d...@telematicgroup.com>
> >> An: users@sogo.nu
> >> Betreff: [SOGo] Outlook and Openchange Issues
> >> Hello...
> >> I have installed SOGo, Dovecot (using mysql database for authentication
> >> with virtual domain support) and all the rest of the components that
> are
> >> needed to have a fully functional mail server on Ubuntu 12.04.
> >> I have also installed Openchange and Samba4 but am not using LDAP
> >> anywhere.
> >> When i try to setup exchange however, it constantly fails to connect to
> >> the exchange server although the ports are all open.
> >> From my troubleshooting it appears that what is failing is actually
> the
> >> authentication by the samba service.
> >>
> >> Qn: Is it necessary for me to install LDAP to have a working version of
> >> Openchange?
> >> Also, if am having multiple domains for which this server handles
> email,
> >> how will i create a link between the samba users and the ones in the
> >> MYSQL database (Dovecot)?
> >>
> >> Regards
> >> David
> >> --
> >> users@sogo.nu
> >> https://inverse.ca/sogo/lists
>
> --
> users@sogo.nu
> https://inverse.ca/sogo/lists
--
users@sogo.nu
https://inverse.ca/sogo/lists
