Hello, i try to bind to an server using the ldap_sals_bind_s function. The Host is not localhost, but is accessible via internet. I'v tested the connection with a java based ldap browser. When i try to do this using my simple c++ program, it fails with error -1. Here is what the program actually do: //initialize returns success result = ldap_initialize( &ld, host); result = ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, LDAP_VERSION3); //set this option only after successful bind? result = ldap_set_option(ld, LDAP_OPT_X_TLS_REQUIRE_CERT, LDAP_OPT_X_TLS_NEVER); //the synchronous bind function returns -1 server down result = ldap_sasl_bind_s(ld, root_dn, LDAP_SASL_SIMPLE, &credential, NULL,NULL, &serverReturnedCredentials); When I use the asynchronous ldap_sals_bind() function, it returns 0 ldap_success. (I`m also able to create a simple socket to this particular server and port). The error -1 comes from the following ldap_result() function. The problem here is that the socket throws a sock_errno 54 (connection reset by peer). Someone an idea why the connection always will be disturbed? Thanks for any help best regards, Max