Horde problem: Can't contact LDAP server

[Vladislav Tchernev]

Hello,
I am running kolab 2.0.3 and was installed horde with no issues. Configuring 
and running horde however is driving me crazy. I have followed the guide on 
http://www.kolab.org/webclient.html but obviously I am missing something. The 
problem is that after setting up Kolab Group Ware, Authentication and System 
Preferences in the horde setup menu I am not able to log into horde. The 
error I am getting is:
<<  Failed to retrieve user's DN: [-1] Can't contact LDAP server >>

The user I am trying to log in is a working kolab user which I put in the 
Authentication horde menu. I checked the many times the
<< /kolab/var/kolab/www/horde/config/conf.php >> conf file and the openldap 
setting seems to me to be OK:


$conf['kolab']['ldap']['server'] = '127.0.0.1';
$conf['kolab']['ldap']['port'] = 389;
$conf['kolab']['ldap']['basedn'] = 'dc=kolablts,dc=ltsnetworks,dc=net';
$conf['kolab']['ldap']['binddn'] = 
'cn=manager,cn=internal,dc=kolablts,dc=ltsnetworks,dc=net';
$conf['kolab']['ldap']['bindpw'] = '*****';

my /kolab/etc/kolab/kolab.conf is as follow:

fqdnhostname : my2.ltsnetworks.net
is_master : true
base_dn : dc=kolablts,dc=ltsnetworks,dc=net
bind_dn : cn=manager,cn=internal,dc=kolablts,dc=ltsnetworks,dc=net
bind_pw : tarator
bind_pw_hash : {SSHA}1sfEn2h43r/US+V8i8XGipYKdGGnJ8bg
ldap_uri : ldap://127.0.0.1:389
ldap_master_uri : ldap://127.0.0.1:389
php_dn : cn=nobody,cn=internal,dc=kolablts,dc=ltsnetworks,dc=net
php_pw : 3tV9JJJhpDvLBF+wytmcHzACP8lTMlt00rqdLn/X
calendar_dn : cn=calendar,cn=internal,dc=kolablts,dc=ltsnetworks,dc=net
calendar_pw : JwI+SMD2uF6FP00oIZlWKeIPIrqed3yJ19Y7+ika


On any horde loggin attempt I can see from the logs that there is  an 
successfull imap login : 
my2.ltsnetworks.net [192.168.28.97] vladt at kolablts.ltsnetworks.net plaintext 
User logged in

but horde cant connect to ldap .... 

from apache log:

[error] PHP Warning:  ldap_search(): Search: Can't contact LDAP server 
in /kolab/lib/php/Horde/Prefs/ldap.php on line 212
[error] PHP Notice:  Failed to retrieve user's DN: [-1] Can't contact LDAP 
server in /kolab/lib/php/PEAR.php on line 842

and from horde log:

HORDE [error] [horde] FAILED LOGIN for vladt [192.168.28.141] to Horde [on 
line 115 of "/kolab/var/kolab/www/horde/login.php"]


I have a filling that I am missing something very stupid but cat find out 
what .. Could someone can help me with that .. any hints ... 

Best regards
Vlad