I have two servers: * Server A: Debian Etch - Works Fine * Server B: Debian Lenny - Do not Works supportedSASLMechanisms EXTERNAL In Server A I have: # ldapsearch -v -H ldap://server-Etch -b "" -LLL -s base supportedSASLMechanisms -ZZ ldap_initialize( ldap://server-Etch ) SASL/EXTERNAL authentication started SASL username: emailAddress=jarbas.peixoto(a)previdencia.gov.br,CN=jarbas.peixoto,OU=DATAPREV,O=Previdencia Social,L=Campo Grande,ST=Mato Grosso do Sul,C=BR SASL SSF: 0 filter: (objectclass=*) requesting: supportedSASLMechanisms dn: supportedSASLMechanisms: PLAIN supportedSASLMechanisms: DIGEST-MD5 supportedSASLMechanisms: LOGIN supportedSASLMechanisms: NTLM supportedSASLMechanisms: CRAM-MD5 supportedSASLMechanisms: EXTERNAL In Server B I have: # ldapsearch -v -H ldap://server-Lenny -b "" -LLL -s base supportedSASLMechanisms -ZZ ldap_initialize( ldap://server-Lenny:389/??base ) ldap_start_tls: Connect error (-11 # ldapsearch -v -H ldap://server-Lenny -b "" -LLL -s base supportedSASLMechanisms -ZZ -d 1 ldap_url_parse_ext(ldap://server-Lenny) ldap_create ldap_url_parse_ext(ldap://server-Lenny:389/??base) ldap_extended_operation_s ldap_extended_operation ldap_send_initial_request ldap_new_connection 1 1 0 ldap_int_open_connection ldap_connect_to_host: TCP server-Lenny:389 ldap_new_socket: 3 ldap_prepare_socket: 3 ldap_connect_to_host: Trying 10.82.0.234:389 ldap_pvt_connect: fd: 3 tm: -1 async: 0 ldap_open_defconn: successful ldap_send_server_request ber_scanf fmt ({it) ber: ber_scanf fmt ({) ber: ber_flush2: 31 bytes to sd 3 ldap_result ld 0x9d73280 msgid 1 wait4msg ld 0x9d73280 msgid 1 (infinite timeout) wait4msg continue ld 0x9d73280 msgid 1 all 1 ** ld 0x9d73280 Connections: * host: www-mmldap port: 389 (default) refcnt: 2 status: Connected last used: Thu Jan 29 18:17:22 2009 ** ld 0x9d73280 Outstanding Requests: * msgid 1, origid 1, status InProgress outstanding referrals 0, parent count 0 ld 0x9d73280 request count 1 (abandoned 0) ** ld 0x9d73280 Response Queue: Empty ld 0x9d73280 response count 0 ldap_chkResponseList ld 0x9d73280 msgid 1 all 1 ldap_chkResponseList returns ld 0x9d73280 NULL ldap_int_select read1msg: ld 0x9d73280 msgid 1 all 1 ber_get_next ber_get_next: tag 0x30 len 12 contents: read1msg: ld 0x9d73280 msgid 1 message type extended-result ber_scanf fmt ({eAA) ber: read1msg: ld 0x9d73280 0 new referrals read1msg: mark request completed, ld 0x9d73280 msgid 1 request done: ld 0x9d73280 msgid 1 res_errno: 0, res_error: <>, res_matched: <> ldap_free_request (origid 1, msgid 1) ldap_free_connection 0 1 ldap_free_connection: refcnt 1 ldap_parse_extended_result ber_scanf fmt ({eAA) ber: ldap_parse_result ber_scanf fmt ({iAA) ber: ber_scanf fmt (}) ber: ldap_msgfree ldap_err2string ldap_start_tls: Connect error (-11) In the /var/log/syslog I have: Jan 29 18:17:22 server-Lenny slapd[12945]: conn=99 fd=21 ACCEPT from IP=10.82.0.234:50441 (IP=0.0.0.0:389) Jan 29 18:17:22 server-Lenny slapd[12945]: conn=99 op=0 EXT oid=1.3.6.1.4.1.1466.20037 Jan 29 18:17:22 server-Lenny slapd[12945]: conn=99 op=0 STARTTLS Jan 29 18:17:22 server-Lenny slapd[12945]: conn=99 op=0 RESULT oid= err=0 text= Jan 29 18:17:22 server-Lenny slapd[12945]: conn=99 fd=21 closed (TLS negotiation failure) This is very important for use openldap with user certificates. Anybody have a help for me? Tanks!