We are not able to connect to Active Directory service. We have tried all configurations possible with no success.

Server Configuration
ldap://192.168.0.250:389
ldap://192.168.0.250
192.168.0.250

Manager DN
cn=config,ou=dpto_ti,ou=Administracao,ou=Usuarios,dc=matriz,dc=jaime,dc=com,dc=br

root DN
dc=matriz,dc=jaime,dc=com,dc=br

LDAP User Search
ou=Usuarios,dc=matriz,dc=jaime,dc=com,dc=br

LDAP Group Search
ou=Grupos,dc=matriz,dc=jaime,dc=com,dc=br

Error

Error while serving http://jenkins.jaimeadm.com/manage/descriptorByName/hudson.security.LDAPSecurityRealm/validate java.lang.NullPointerException at hudson.security.LDAPSecurityRealm$DescriptorImpl.validate(LDAPSecurityRealm.java:1594)

...

Caught unhandled exception with ID f472d017-e2ab-43b1-95bd-d353c8dba84c java.lang.NullPointerException at hudson.security.LDAPSecurityRealm$DescriptorImpl.validate(LDAPSecurityRealm.java:1594)