Dovecot+Samba AD - authentication failure

[Odhiambo Washington]

Hi,

I have setup samba4 as AD and hoping to have dovecot authenticate users
against it. I am facing challenges though and I am unable to figure it out.
I could do with a third eye to help me spot what is wrong.


root at adc0:/etc# doveadm auth test -x service=imap odhiambo at newideatest.local
Password:
passdb: odhiambo at newideatest.local auth failed
extra fields:
  temp
Warning: auth-client: conn unix:/var/run/dovecot/auth-client: Auth
connection closed with 1 pending requests (max 0 secs, pid=10537, EOF)
Fatal: Couldn't connect to auth socket

A test against IMAP gives the following debug information:
Nov 22 14:31:01 auth: Debug: Loading modules from directory:
/usr/lib/dovecot/modules/auth
Nov 22 14:31:01 auth: Debug: Module loaded:
/usr/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so
Nov 22 14:31:01 auth: Debug: Module loaded:
/usr/lib/dovecot/modules/auth/libdriver_mysql.so
Nov 22 14:31:01 auth: Debug: Loading modules from directory:
/usr/lib/dovecot/modules/auth
Nov 22 14:31:01 auth: Debug: Module loaded:
/usr/lib/dovecot/modules/auth/libauthdb_ldap.so
Nov 22 14:31:01 auth: Debug: Read auth token secret from
/var/run/dovecot/auth-token-secret.dat
Nov 22 14:31:01 auth: Debug: auth client connected (pid=10979)
Nov 22 14:31:08 auth: Debug: client in: AUTH    1       PLAIN
 service=imap    secured session=uPLvabC0RIh/AAAB        lip=127.0.0.1
 rip=127.0.0.1   lport=143       rport=34884     resp=<hidden>
Nov 22 14:31:08 auth: Debug:
ldap(odhiambo at newideatest.local,127.0.0.1,<uPLvabC0RIh/AAAB>):
Performing passdb lookup
Nov 22 14:31:08 auth: Debug:
ldap(odhiambo at newideatest.local,127.0.0.1,<uPLvabC0RIh/AAAB>):
bind search: base=cn=Users,dc=NEWIDEATEST,dc=LOCAL
filter=(&(objectClass=user)(!(userAccountControl:1.2.840.113556.1.4.803:=2))(sAMAccountName=odhiambo at newideatest.local
))
Nov 22 14:31:08 auth: Debug:
ldap(odhiambo at newideatest.local,127.0.0.1,<uPLvabC0RIh/AAAB>):
no fields returned by the server *< ====================*
Nov 22 14:31:08 auth: Debug:
ldap(odhiambo at newideatest.local,127.0.0.1,<uPLvabC0RIh/AAAB>):
Finished passdb lookup
Nov 22 14:31:08 auth: Debug:
auth(odhiambo at newideatest.local,127.0.0.1,<uPLvabC0RIh/AAAB>):
Auth request finished
Nov 22 14:31:10 auth: Debug: client passdb out: FAIL    1
 user=odhiambo at newideatest.local

info.log:

Nov 22 14:31:08 auth: Info: ldap(odhiambo at newideatest.local
,127.0.0.1,<uPLvabC0RIh/AAAB>):* unknown user* (given password: XXXXXXX)
Nov 22 14:31:15 imap-login: Info: Aborted login (auth failed, 1 attempts in
7 secs): user=<odhiambo at newideatest.local>, method=PLAIN, rip=127.0.0.1,
lip=127.0.0.1, secured, session=<uPLvabC0RIh/AAAB>


Here is my doveconf -n:

https://paste.ubuntu.com/p/SPmrxZxHPx/

My dovecot-ldap.cont.ext:

uris         = ldap://localhost/
dn           = "dovecot at newideatest.local"
dnpass       = "XXXXXXXX"
sasl_bind    = no
tls          = no
ldap_version = 3
deref        = never
scope        = subtree
base         = cn=Users,dc=NEWIDEATEST,dc=LOCAL
auth_bind    = yes
user_filter  =
(&(objectClass=user)(!(userAccountControl:1.2.840.113556.1.4.803:=2))(|(mail=%u)(sAMAccountName=%u)(otherMailbox=%u)))
user_attrs   =
sAMAccountName=user,userPassword=password,=mail=maildir:/home/%n/Maildir/
pass_filter  =
(&(objectClass=user)(!(userAccountControl:1.2.840.113556.1.4.803:=2))(sAMAccountName=%u))
pass_attrs   = sAMAccountName=user,userPassword=password

The use exists in the database:

*root at adc0:/var/log/dovecot# samba-tool user show odhiambo*
ldb_wrap open of secrets.ldb
dn: CN=Odhiambo Washington,CN=Users,DC=newideatest,DC=local
objectClass: top
objectClass: person
objectClass: organizationalPerson
objectClass: user
cn: Odhiambo Washington
sn: Washington
givenName: Odhiambo
instanceType: 4
whenCreated: 20201120101420.0Z
displayName: Odhiambo Washington
uSNCreated: 4086
name: Odhiambo Washington
objectGUID: e6969596-8b28-41af-b5d8-cea63cc97f98
badPwdCount: 0
codePage: 0
countryCode: 0
badPasswordTime: 0
lastLogoff: 0
lastLogon: 0
primaryGroupID: 513
objectSid: S-1-5-21-701866827-3355127779-3787685610-1106
accountExpires: 9223372036854775807
logonCount: 0
sAMAccountName: odhiambo
sAMAccountType: 805306368
userPrincipalName: odhiambo at newideatest.local
objectCategory: CN=Person,CN=Schema,CN=Configuration,DC=newideatest,DC=local
mail: odhiambo at newideatest.local
loginShell: /bin/bash
userAccountControl: 512
pwdLastSet: 132505181852397220
whenChanged: 20201122112945.0Z
uSNChanged: 4104
distinguishedName: CN=Odhiambo Washington,CN=Users,DC=newideatest,DC=local




-- 
Best regards,
Odhiambo WASHINGTON,
Nairobi,KE
+254 7 3200 0004/+254 7 2274 3223
"Oh, the cruft.", grep ^[^#] :-)
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