I wrote a wiki on how to build an ldap-authenticated network using samba4. the dovecot part is on this page, but there are other relevant parts reachable from the main page as well:

http://cocnm.computerisms.ca/index.php/Install_Qmail-ldap,_Dovecot,_and_Rela...

Computerisms Bob Miller
867-334-7117 / 867-633-3760 http://computerisms.ca

On Fri, 2013-12-06 at 19:21 +0100, dago@quantentunnel.de wrote:

Hello list,

I am struggling with setting up dovecot 2.1.7 with samba 4.1.2 on debian wheezy. Dovecot should authenticate via LDAP, but I cannot get it to work reliably. Sometimes auth works, sometimes not. Referals are already activated in ldap.conf … LDAP-authentication works fine with other clients (Apache Directory Studio, …) Has somebody got a similar setup running? I would love some hints on how to debug this issue …

Thank you!

Regards

dovecot-ldap.conf hosts = 192.168.188.156:389 dn = CN=Administrator,CN=Users,DC=DOMAIN,DC=LOCAL dnpass = Test123 auth_bind = yes ldap_version = 3 base = DC=DOMAIN,DC=LOCAL tls = no debug_level = -1 ldap_version = 3 scope = subtree user_attrs = uidNumber=uid,gidNumber=gid user_filter = (&(&(objectClass=Person)(sAMAccountName=%u))) pass_attrs = sAMAccountName=user,userPassword=password pass_filter = (&(&(objectClass=Person)(sAMAccountName=%u)))

logs: srv1 dovecot: auth: Debug: auth client connected (pid=0) srv1 dovecot: auth: Debug: client in: AUTH#0111#011PLAIN#011service=doveadm#011resp=<hidden> srv1 dovecot: auth: Debug: ldap(john): bind search: base=DC=DOMAIN,DC=LOCAL filter=(&(&(objectClass=Person)(sAMAccountName=john))) srv1 dovecot: auth: Error: ldap_search srv1 dovecot: auth: Error: put_filter: "(&(&(objectClass=Person)(sAMAccountName=john)))" srv1 dovecot: auth: Error: put_filter: AND srv1 dovecot: auth: Error: put_filter_list "(&(objectClass=Person)(sAMAccountName=john))" srv1 dovecot: auth: Error: put_filter: "(&(objectClass=Person)(sAMAccountName=john))" srv1 dovecot: auth: Error: put_filter: AND srv1 dovecot: auth: Error: put_filter_list "(objectClass=Person)(sAMAccountName=john)" srv1 dovecot: auth: Error: put_filter: "(objectClass=Person)" srv1 dovecot: auth: Error: put_filter: simple srv1 dovecot: auth: Error: put_simple_filter: "objectClass=Person" srv1 dovecot: auth: Error: put_filter: "(sAMAccountName=john)" srv1 dovecot: auth: Error: put_filter: simple srv1 dovecot: auth: Error: put_simple_filter: "sAMAccountName=john" srv1 dovecot: auth: Error: ldap_build_search_req ATTRS: sAMAccountName srv1 dovecot: auth: Error: ldap_send_initial_request srv1 dovecot: auth: Error: ldap_send_server_request srv1 dovecot: auth: Error: ldap_result ld 0x7fef48794580 msgid -1 srv1 dovecot: auth: Error: wait4msg ld 0x7fef48794580 msgid -1 (timeout 0 usec) srv1 dovecot: auth: Error: wait4msg continue ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Connections: srv1 dovecot: auth: Error: * host: DOMAIN.local port: 0 srv1 dovecot: auth: Error: refcnt: 1 status: Connected srv1 dovecot: auth: Error: last used: Fri Dec 6 19:08:49 2013 srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: * host: 192.168.188.156 port: 389 (default) srv1 dovecot: auth: Error: refcnt: 2 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Outstanding Requests: srv1 dovecot: auth: Error: * msgid 37, origid 37, status InProgress srv1 dovecot: auth: Error: outstanding referrals 0, parent count 0 srv1 dovecot: auth: Error: * msgid 35, origid 33, status InProgress srv1 dovecot: auth: Error: outstanding referrals 0, parent count 1 srv1 dovecot: auth: Error: * msgid 33, origid 33, status RequestCompleted srv1 dovecot: auth: Error: outstanding referrals 1, parent count 1 srv1 dovecot: auth: Error: ld 0x7fef48794580 request count 3 (abandoned 0) srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Response Queue: srv1 dovecot: auth: Error: Empty srv1 dovecot: auth: Error: ld 0x7fef48794580 response count 0 srv1 dovecot: auth: Error: ldap_chkResponseList ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fef48794580 NULL srv1 dovecot: auth: Error: ldap_int_select srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid 35 message type search-result srv1 dovecot: auth: Error: ldap_chase_referrals srv1 dovecot: auth: Error: read1msg: V2 referral chased, mark request completed, id = 35 srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 0 new referrals srv1 dovecot: auth: Error: read1msg: mark request completed, ld 0x7fef48794580 msgid 35 srv1 dovecot: auth: Error: merged parent (id 33) error info: result errno 1, error <00002020: Operation unavailable without authentication>, matched <> srv1 dovecot: auth: Error: request done: ld 0x7fef48794580 msgid 33 srv1 dovecot: auth: Error: res_errno: 1, res_error: <00002020: Operation unavailable without authentication>, res_matched: <> srv1 dovecot: auth: Error: ldap_free_request (origid 33, msgid 33) srv1 dovecot: auth: Error: ldap_free_request (origid 33, msgid 35) srv1 dovecot: auth: Error: ldap_free_connection 0 1 srv1 dovecot: auth: Error: ldap_send_unbind srv1 dovecot: auth: Error: ldap_free_connection: actually freed srv1 dovecot: auth: Error: ldap_parse_result srv1 dovecot: auth: Error: ldap_err2string srv1 dovecot: auth: Error: ldap(john): ldap_search(base=DC=DOMAIN,DC=LOCAL filter=(&(&(objectClass=Person)(sAMAccountName=john)))) failed: Operations error srv1 dovecot: auth: Error: ldap_msgfree srv1 dovecot: auth: Error: ldap_result ld 0x7fef48794580 msgid -1 srv1 dovecot: auth: Error: wait4msg ld 0x7fef48794580 msgid -1 (timeout 0 usec) srv1 dovecot: auth: Error: wait4msg continue ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Connections: srv1 dovecot: auth: Error: * host: 192.168.188.156 port: 389 (default) srv1 dovecot: auth: Error: refcnt: 2 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Outstanding Requests: srv1 dovecot: auth: Error: * msgid 37, origid 37, status InProgress srv1 dovecot: auth: Error: outstanding referrals 0, parent count 0 srv1 dovecot: auth: Error: ld 0x7fef48794580 request count 1 (abandoned 0) srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Response Queue: srv1 dovecot: auth: Error: Empty srv1 dovecot: auth: Error: ld 0x7fef48794580 response count 0 srv1 dovecot: auth: Error: ldap_chkResponseList ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fef48794580 NULL srv1 dovecot: auth: Error: ldap_int_select srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid 37 message type search-entry srv1 dovecot: auth: Error: ldap_first_attribute srv1 dovecot: auth: Error: ldap_get_values srv1 dovecot: auth: Error: ldap_next_attribute srv1 dovecot: auth: Debug: auth(john): username changed john -> john srv1 dovecot: auth: Debug: ldap(john): result: sAMAccountName=john srv1 dovecot: auth: Error: ldap_get_dn srv1 dovecot: auth: Error: ldap_msgfree srv1 dovecot: auth: Error: ldap_result ld 0x7fef48794580 msgid -1 srv1 dovecot: auth: Error: wait4msg ld 0x7fef48794580 msgid -1 (timeout 0 usec) srv1 dovecot: auth: Error: wait4msg continue ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Connections: srv1 dovecot: auth: Error: * host: 192.168.188.156 port: 389 (default) srv1 dovecot: auth: Error: refcnt: 2 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Outstanding Requests: srv1 dovecot: auth: Error: * msgid 37, origid 37, status InProgress srv1 dovecot: auth: Error: outstanding referrals 0, parent count 0 srv1 dovecot: auth: Error: ld 0x7fef48794580 request count 1 (abandoned 0) srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Response Queue: srv1 dovecot: auth: Error: Empty srv1 dovecot: auth: Error: ld 0x7fef48794580 response count 0 srv1 dovecot: auth: Error: ldap_chkResponseList ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fef48794580 NULL srv1 dovecot: auth: Error: ldap_int_select srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid -1 all 0 srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid 37 message type search-reference srv1 dovecot: auth: Error: ldap_chase_v3referrals srv1 dovecot: auth: Error: ldap_url_parse_ext(ldap://DOMAIN.local/CN=Configuration,DC=DOMAIN,DC=local) srv1 dovecot: auth: Error: re_encode_request: new msgid 39, new dn srv1 dovecot: auth: Error: re_encode_request new request is: srv1 dovecot: auth: Error: ber_dump: buf=0x7fef4879d8d0 ptr=0x7fef4879d956 end=0x7fef4879e8ac len=134 srv1 dovecot: auth: Error: 0000: 61 6d 65 4e 61 6d 65 00 00 00 00 00 00 00 00 00 ameName.........
srv1 dovecot: auth: Error: 0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0040: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0050: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0070: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
srv1 dovecot: auth: Error: 0080: 00 00 00 00 00 00 ......
srv1 dovecot: auth: Error: ldap_chase_v3referral: msgid 37, url "ldap://DOMAIN.local/CN=Configuration,DC=DOMAIN,DC=local" srv1 dovecot: auth: Error: ldap_send_server_request srv1 dovecot: auth: Error: ldap_new_connection 0 1 1 srv1 dovecot: auth: Error: ldap_int_open_connection srv1 dovecot: auth: Error: ldap_connect_to_host: TCP DOMAIN.local:389 srv1 dovecot: auth: Error: ldap_new_socket: 19 srv1 dovecot: auth: Error: ldap_prepare_socket: 19 srv1 dovecot: auth: Error: ldap_connect_to_host: Trying 192.168.188.156:389 srv1 dovecot: auth: Error: ldap_pvt_connect: fd: 19 tm: -1 async: 0 srv1 dovecot: auth: Error: anonymous rebind via ldap_sasl_bind("") srv1 dovecot: auth: Error: ldap_sasl_bind srv1 dovecot: auth: Error: ldap_send_initial_request srv1 dovecot: auth: Error: ldap_send_server_request srv1 dovecot: auth: Error: ldap_result ld 0x7fef48794580 msgid 40 srv1 dovecot: auth: Error: wait4msg ld 0x7fef48794580 msgid 40 (timeout 100000 usec) srv1 dovecot: auth: Error: wait4msg continue ld 0x7fef48794580 msgid 40 all 1 srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Connections: srv1 dovecot: auth: Error: * host: DOMAIN.local port: 0 srv1 dovecot: auth: Error: refcnt: 2 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: rebind in progress srv1 dovecot: auth: Error: queue is empty srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: * host: 192.168.188.156 port: 389 (default) srv1 dovecot: auth: Error: refcnt: 3 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Outstanding Requests: srv1 dovecot: auth: Error: * msgid 40, origid 40, status InProgress srv1 dovecot: auth: Error: outstanding referrals 0, parent count 0 srv1 dovecot: auth: Error: * msgid 37, origid 37, status InProgress srv1 dovecot: auth: Error: outstanding referrals 1, parent count 0 srv1 dovecot: auth: Error: ld 0x7fef48794580 request count 2 (abandoned 0) srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Response Queue: srv1 dovecot: auth: Error: Empty srv1 dovecot: auth: Error: ld 0x7fef48794580 response count 0 srv1 dovecot: auth: Error: ldap_chkResponseList ld 0x7fef48794580 msgid 40 all 1 srv1 dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fef48794580 NULL srv1 dovecot: auth: Error: ldap_int_select srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid 40 all 1 srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 msgid 37 message type search-result srv1 dovecot: auth: Error: read1msg: ld 0x7fef48794580 0 new referrals srv1 dovecot: auth: Error: read1msg: mark request completed, ld 0x7fef48794580 msgid 37 srv1 dovecot: auth: Error: wait4msg ld 0x7fef48794580 0 s 99976 us to go srv1 dovecot: auth: Error: wait4msg continue ld 0x7fef48794580 msgid 40 all 1 srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Connections: srv1 dovecot: auth: Error: * host: DOMAIN.local port: 0 srv1 dovecot: auth: Error: refcnt: 2 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: rebind in progress srv1 dovecot: auth: Error: queue is empty srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: * host: 192.168.188.156 port: 389 (default) srv1 dovecot: auth: Error: refcnt: 2 status: Connected srv1 dovecot: auth: Error: last used: Fri 2013 srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Outstanding Requests: srv1 dovecot: auth: Error: * msgid 40, origid 40, status InProgress srv1 dovecot: auth: Error: outstanding referrals 0, parent count 0 srv1 dovecot: auth: Error: * msgid 37, origid 37, status RequestCompleted srv1 dovecot: auth: Error: outstanding referrals 1, parent count 0 srv1 dovecot: auth: Error: ld 0x7fef48794580 request count 2 (abandoned 0) srv1 dovecot: auth: Error: ** ld 0x7fef48794580 Response Queue: srv1 dovecot: auth: Error: Empty srv1 dovecot: auth: Error: ld 0x7fef48794580 response count 0 srv1 dovecot: auth: Error: ldap_chkResponseList ld 0x7fef48794580 msgid 40 all 1 srv1 dovecot: auth: Error: ldap_chkResponseList returns ld 0x7fef48794580 NULL

dovecot -n: # OS: Linux 3.2.0-4-amd64 x86_64 Debian 7.2 auth_debug = yes auth_verbose = yes managesieve_notify_capability = mailto managesieve_sieve_capability = fileinto reject envelope encoded-character vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy include variables body enotify environment mailbox date ihave passdb { args = /etc/dovecot/dovecot-ldap.conf driver = ldap } protocols = " imap lmtp sieve" service auth { unix_listener /var/spool/postfix/private/auth { group = vmail mode = 0660 user = postfix } unix_listener auth-master { group = vmail mode = 0600 user = vmail } } ssl = no userdb { driver = passwd }