Not receiving messages

Hi,
I installed ejabberd 1.1.2 under ubuntu, with LDAP authentication.
By web-admin I see logged users (I can even see LDAP info with PIDGIN client), but:

- sending messages is not successful, because I don't receive anything (after some minutes I receive and error 404)
- I can add a user to pidgin, but he appears not authorized to me.

Is this a matter of ACL?

I also tried to install ejabberd on a local machine, without LDAP auth, but with internal_auth. Things don't change.
I attach my ejabberd.cfg

Could you please suggest me how to solve my problem?
Thank you,
Nicola

@@@@@@@@@@@@@@@@@@@@@@@ EJABBERD.CFG @@@@@@@@@@@@@@@@@@@@@@@@

override_global.
override_local.
override_acls.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% ucf section

%% Admin user
{acl, admin, {user, "nicola", "my-domain"}}.

%% Hostname
{hosts, ["my-domain"]}.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% Users that have admin access. Add line like one of the following after you
% will be successfully registered on server to get admin access:
%{acl, admin, {admin, "my-domain"}}.

% Blocked users:
{acl, blocked, {user, "test"}}.

% Local users:
{acl, local, {user_regexp, ""}}.

% Another examples of ACLs:
%{acl, jabberorg, {server, "jabber.org"}}.
%{acl, aleksey, {user, "aleksey", "jabber.ru"}}.
%{acl, test, {user_regexp, "^test"}}.
%{acl, test, {user_glob, "test*"}}.

% Everybody can create pubsub nodes
{access, pubsub_createnode, [{allow, all}]}.

% Only admins can use configuration interface:
{access, configure, [{allow, admin}]}.

% Every username can be registered via in-band registration:
{access, register, [{allow, admin}]}.

% None username can be registered via in-band registration:
%{access, register, [{deny, all}]}.

% After successful registration user will get message with following subject
% and body:
{welcome_message,
{"Welcome!",
"Welcome to Debian Jabber Service. "
"For information about Jabber visit http://jabber.org"}}.
% Replace them with 'none' if you don't want to send such message:
%{welcome_message, none}.

% List of people who will get notifications about registered users
%{registration_watchers, ["admin1@localhost",
% "admin2@localhost"]}.

% Only admins can send announcement messages:
{access, announce, [{allow, all}]}.

% Only non-blocked users can use c2s connections:
{access, c2s, [{deny, blocked}, {allow, all}]}.

% Set shaper with name "normal" to limit traffic speed to 1000B/s
{shaper, normal, {maxrate, 1000}}.

% Set shaper with name "fast" to limit traffic speed to 50000B/s
{shaper, fast, {maxrate, 50000}}.

% For all users except admins used "normal" shaper
{access, c2s_shaper, [{none, admin}, {normal, all}]}.

% For all S2S connections used "fast" shaper
{access, s2s_shaper, [{fast, all}]}.

% Admins of this server are also admins of MUC service:
{access, muc_admin, [{allow, admin}]}.

% All users are allowed to use MUC service:
{access, muc, [{allow, all}]}.

% This rule allows access only for local users:
{access, local, [{allow, local}]}.

% For LDAP authentication use these lines instead of above one:
{auth_method, ldap}.
{ldap_servers, ["localhost"]}. % List of LDAP servers
{ldap_port, 389}.
{ldap_base, "dc=my-domain,dc=eu"}. % Search base of LDAP directory
{ldap_rootdn, "cn=admin,dc=my-domain,dc=eu"}. % LDAP manager
{ldap_password, "password"}. % Password to LDAP manager
{ldap_uidattr, "uid"}. % LDAP attribute that holds user ID
{ldap_filter, "(objectClass=shadowAccount)"}.

{host_config, "my-domain", [{auth_method, [ldap]}]}.

%% Define the maximum number of time a single user is allowed to connect:
{max_user_sessions, 10}.

% Default language for server messages
{language, "en"}.

% Listened ports:
{listen,
% Ordinary client-2-server service
[{5222, ejabberd_c2s, [{access, c2s},
{max_stanza_size, 65536},
starttls, {certfile, "/etc/ejabberd/server.pem"},
{shaper, c2s_shaper}]},

% SSL-enabled client-2-server service
{5223, ejabberd_c2s, [{access, c2s},
{max_stanza_size, 65536},
tls, {certfile, "/etc/ejabberd/server.pem"},
{shaper, c2s_shaper}]},

% Server-2-server service
{5269, ejabberd_s2s_in, [{shaper, s2s_shaper},
{max_stanza_size, 131072}]},

{5280, ejabberd_http, [http_poll, web_admin]}
]}.

% Use STARTTLS+Dialback for S2S connections
{s2s_use_starttls, true}.
{s2s_certfile, "/etc/ejabberd/server.pem"}.
%{domain_certfile, "example.org", "/etc/ejabberd/example_org.pem"}.
%{domain_certfile, "example.com", "/etc/ejabberd/example_com.pem"}.

% If SRV lookup fails, then port 5269 is used to communicate with remote server
{outgoing_s2s_port, 5269}.

% Used modules:
{modules,
[
{mod_adhoc, []},
{mod_announce, [{access, announce}]}, % Depends on mod_adhoc
{mod_register, [{access, register}]},
{mod_roster, []},
{mod_privacy, []},
{mod_configure, []}, % Depends on mod_adhoc
{mod_configure2, []},
{mod_stats, []},
{mod_vcard, []},
{mod_offline, []},
{mod_private, []},
{mod_muc, [{access, muc},
{access_create, muc},
{access_admin, muc_admin}]},
{mod_shared_roster, []},
{mod_pubsub, [{access_createnode, pubsub_createnode}]},
{mod_time, []},
{mod_last, []},
{mod_version, []},
{mod_vcard_ldap,
[{"NICK", "%u", []},
{"FN", "%s", ["displayName"]},
{"LAST", "%s", ["sn"]},
{"FIRST", "%s", ["givenName"]},
{"ORGNAME", "%s", ["o"]},
{"ORGUNIT", "%s", ["ou"]},
{"CTRY", "%s", ["c"]},
{"LOCALITY", "%s", ["l"]},
{"STREET", "%s", ["street"]},
{"REGION", "%s", ["st"]},
{"PCODE", "%s", ["postalCode"]},
{"TITLE", "%s", ["title"]},
{"DESC", "%s", ["description"]},
{"TEL", "%s", ["telephoneNumber"]},
{"EMAIL", "%s", ["mail"]}]
}
]}.
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