connection lost openldap alfresco community 7.2

[crisdev13]

here is my settings

### LDAP: Auth###
authentication.chain=alfinst:alfrescoNtlm,ldap1:ldap
ldap.authentication.active=true
ldap.authentication.allowGuestLogin=true
ldap.authentication.userNameFormat=uid=%s,ou=People,dc=company,dc=com
ldap.authentication.java.naming.provider.url=ldap://127.0.0.1:389
ldap.synchronization.active=false

[crisdev13]

up!!