[Dovecot] Postfix+Dovecot SASL+LDAP(AD)

[Vitaliy Vladimirovich]

I have tried configure Postfix with Dovecot SASL to authenticate remote users in LDAP (Active Directory).  
Below my dovecot.conf:  
  
protocols = none  
ssl = none  
  
auth default {  
    mechanisms = plain login  
    passdb ldap {  
        args = /usr/local/etc/dovecot-ldap.conf  
  }  
    userdb ldap {  
        args = /usr/local/etc/dovecot-ldap-userdb.conf  
  }  
  
}  
  
  
dovecot-ldap.conf  
  
hosts = 10.55.0.2:389  
debug_level = 1  
auth_bind = yes  
auth_bind_userdn = cn=%n,dc=example,dc=gov,dc=ua  
ldap_version = 3  
base = dc=example, dc=gov, dc=ua  
scope = subtree  
## 10.55.0.2 - Domain Controller  
##  
  
  
But it does not work:-(  
Where is mistake?  
  
Below log:  
  
  
  
Nov 18 13:02:59 mx postfix/smtpd[12985]: connect from unknown[190.10.190.3]  
Nov 18 13:02:59 mx postfix/smtpd[12985]: setting up TLS connection from unknown[190.10.190.3]  
Nov 18 13:02:59 mx postfix/smtpd[12985]: Anonymous TLS connection established from unknown[190.10.190.3]: TLSv1 with cipher RC4-MD5 (128/128 bits)  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_bind  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_simple_bind  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_sasl_bind  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_send_initial_request  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_send_server_request  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_result ld 0x11847020 msgid -1  
Nov 18 13:02:59 mx dovecot: auth(default): wait4msg ld 0x11847020 msgid -1 (timeout 0 usec)  
Nov 18 13:02:59 mx dovecot: auth(default): wait4msg continue ld 0x11847020 msgid -1 all 1  
Nov 18 13:02:59 mx dovecot: auth(default): ** ld 0x11847020 Connections:  
Nov 18 13:02:59 mx dovecot: auth(default): * host: 10.55.0.2  port: 389  (default)  
Nov 18 13:02:59 mx dovecot: auth(default):   refcnt: 2  status: Connected  
Nov 18 13:02:59 mx dovecot: auth(default):   last used: Wed Nov 18 13:02:59 2009  
Nov 18 13:02:59 mx dovecot: auth(default):  
Nov 18 13:02:59 mx dovecot: auth(default):  
Nov 18 13:02:59 mx dovecot: auth(default): ** ld 0x11847020 Outstanding Requests:  
Nov 18 13:02:59 mx dovecot: auth(default):  * msgid 3,  origid 3, status InProgress  
Nov 18 13:02:59 mx dovecot: auth(default):    outstanding referrals 0, parent count 0  
Nov 18 13:02:59 mx dovecot: auth(default):   ld 0x11847020 request count 1 (abandoned 0)  
Nov 18 13:02:59 mx dovecot: auth(default): ** ld 0x11847020 Response Queue:  
Nov 18 13:02:59 mx dovecot: auth(default):    Empty  
Nov 18 13:02:59 mx dovecot: auth(default):   ld 0x11847020 response count 0  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_chkResponseList ld 0x11847020 msgid -1 all 1  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_chkResponseList returns ld 0x11847020 NULL  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_int_select  
Nov 18 13:02:59 mx dovecot: auth(default): read1msg: ld 0x11847020 msgid -1 all 1  
Nov 18 13:02:59 mx dovecot: auth(default): read1msg: ld 0x11847020 msgid 3 message type bind  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_chase_referrals  
Nov 18 13:02:59 mx dovecot: auth(default): read1msg:  V2 referral chased, mark request completed, id = 3  
Nov 18 13:02:59 mx dovecot: auth(default): read1msg: ld 0x11847020 0 new referrals  
Nov 18 13:02:59 mx dovecot: auth(default): read1msg:  mark request completed, ld 0x11847020 msgid 3  
Nov 18 13:02:59 mx dovecot: auth(default): request done: ld 0x11847020 msgid 3  
Nov 18 13:02:59 mx dovecot: auth(default): res_errno: 49, res_error: <80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece>, res_matched: <>  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_free_request (origid 3, msgid 3)  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_parse_result  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_parse_result  
Nov 18 13:02:59 mx dovecot: auth(default): ldap(test_user at example.org.ua,190.10.190.3): invalid credentials  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_msgfree  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_result ld 0x11847020 msgid -1  
Nov 18 13:02:59 mx dovecot: auth(default): wait4msg ld 0x11847020 msgid -1 (timeout 0 usec)  
Nov 18 13:02:59 mx dovecot: auth(default): wait4msg continue ld 0x11847020 msgid -1 all 1  
Nov 18 13:02:59 mx dovecot: auth(default): ** ld 0x11847020 Connections:  
Nov 18 13:02:59 mx dovecot: auth(default): * host: 10.55.0.2  port: 389  (default)  
Nov 18 13:02:59 mx dovecot: auth(default):   refcnt: 1  status: Connected  
Nov 18 13:02:59 mx dovecot: auth(default):   last used: Wed Nov 18 13:02:59 2009  
Nov 18 13:02:59 mx dovecot: auth(default):  
Nov 18 13:02:59 mx dovecot: auth(default):  
Nov 18 13:02:59 mx dovecot: auth(default): ** ld 0x11847020 Outstanding Requests:  
Nov 18 13:02:59 mx dovecot: auth(default):    Empty  
Nov 18 13:02:59 mx dovecot: auth(default):   ld 0x11847020 request count 0 (abandoned 0)  
Nov 18 13:02:59 mx dovecot: auth(default): ** ld 0x11847020 Response Queue:  
Nov 18 13:02:59 mx dovecot: auth(default):    Empty  
Nov 18 13:02:59 mx dovecot: auth(default):   ld 0x11847020 response count 0  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_chkResponseList ld 0x11847020 msgid -1 all 1  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_chkResponseList returns ld 0x11847020 NULL  
Nov 18 13:02:59 mx dovecot: auth(default): ldap_int_select  
Nov 18 13:03:01 mx postfix/smtpd[12985]: warning: unknown[190.10.190.3]: SASL LOGIN authentication failed: UGFzc3dvcmQ6  
Nov 18 13:03:01 mx postfix/smtpd[12985]: lost connection after AUTH from unknown[190.10.190.3]