Paolo, This usually happens on Active Directory, and the solution is to provide a username and password that already has access to the LDAP tree, so that the tree can then be queried to authenticate other users. This is usually done by adding the following two lines to the LDAP auth section of the Config.pm $Self->{'AuthModule::LDAP::SearchUserDN'} = 'DOMAIN\\OTRS_LDAP'; $Self->{'AuthModule::LDAP::SearchUserPw'} = 'Password'; On Fri, 23 Oct 2009 13:10:54 +0000 (GMT), Paolo Esposito wrote:

Message: 1 Date: Fri, 23 Oct 2009 13:10:54 +0000 (GMT) From: Paolo Esposito Subject: [otrs] Error authentication To: otrs@otrs.org Message-ID: <390169.44517.qm@web23207.mail.ird.yahoo.com> Content-Type: text/plain; charset="utf-8"

Hi all, i try to configure otrs to authenticated users from web, when i try to logon on otrs i receive on apache2 thi errore message :

Message: First bind failed! 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece

I installed on my server Opeldap client and when from command line i try to do a ldap query wiyh ldapsearch tool i received thi message :

text: 00000000: LdapErr: DSID-0C090627, comment: In order to perform this ope ration a successful bind must be completed on the connection., data 0, vece

Can we help me about the resolution of this problem ?? For me is very important because i must a presentation for a new client company.

Thank you in advances