[Samba] Domain-name appended into username when "selecting users or groups"
mamalos at eng.auth.gr
Wed Dec 1 04:10:25 MST 2010
I am facing a peculiar situation:
on my smb.conf log level = 5, and on my windows machine I log on as a
local administrator to add remote desktop users that are in fact domain
When my worgroup = SOMETHING, everything works fine. When I change my
worgroup to: workgroup = example.com, and try to add a new remote
desktop user, and set as an object name example.com\user and try to
"check name", after a give the username and password I get the following
The following error occurred while using the user name
(user at EXAMPLE.COM). and password you entered:
Logon failure: unknown user name or bad password.
Which is true, since on the samba server, on my machine log I get:
# grep -i user machine
Got user=[user at EXAMPLE.COM] domain= workstation=[MACHINE] len1=24
Mapping user \[user at EXAMPLE.COM] from workstation [MACHINE]
Mapped domain from  to [EXAMPLE.COM] for user [user at EXAMPLE.COM]
from workstation [MACHINE]
attempting to make a user_info for user at EXAMPLE.COM (user at EXAMPLE.COM)
making strings for user at EXAMPLE.COM's user_info struct
making blobs for user at EXAMPLE.COM's user_info struct
check_ntlm_password: Checking password for unmapped user
\[user at EXAMPLE.COM]@[MACHINE] with the new password interface
check_ntlm_password: mapped user is:
[EXAMPLE.COM]\[user at EXAMPLE.COM]@[MACHINE]
smbldap_search_ext: base => [dc=ee,dc=auth,dc=gr], filter =>
[(&(uid=user at EXAMPLE.COM)(objectclass=sambaSamAccount))], scope => 
ldapsam_getsampwnam: Unable to locate user [user at EXAMPLE.COM] count=0
check_sam_security: Couldn't find user 'user at EXAMPLE.COM' in passdb.
check_ntlm_password: sam authentication for user [user at EXAMPLE.COM]
FAILED with error NT_STATUS_NO_SUCH_USER
check_ntlm_password: Authentication for user [user at EXAMPLE.COM] ->
[user at EXAMPLE.COM] FAILED with error NT_STATUS_NO_SUCH_USER
which shows that domain= (it's empty), whereas in the normal case it
should be: domain=[EXAMPLE.COM] (which is the case when I "simple login"
from my client hosts).
To sum things up (and clarify them a bit):
- when workgroup = SOMETHING, login on to domain as well as "Select
Users or Group" works like a charm.
- when workgroup = example.com, login on to domain works fine, "Select
Users or Group" fails due to the aforementioned reason.
my server is a fbsd box (64bit):
# uname -a
FreeBSD filesrv.example.com 8.1-STABLE FreeBSD 8.1-STABLE #1: Mon Sep 20
13:33:27 EEST 2010
root at filesrv.example.com:/usr/obj/usr/src/sys/FILESRV amd64
and samba is installed from ports (version 3.4.9). Samba's backend is
ldap, and both smb.conf's are *exactly* the same. The only difference is
the workgroup directive (and the relevant directives in the
smbldap-utils configuration file, which shouldn't make any difference).
I would be delighted if anyone could direct me to the right path.
I have not included my smb.conf files; if needed I will attach them "on
demand" :) .
Thank you all for your time in advance,
Electrical and Computer Engineer (Aristotle Un. of Thessaloniki),
MSc (Imperial College of London)
Department of Electrical and Computer Engineering
Faculty of Engineering
Aristotle University of Thessaloniki
phone number : +30 (2310) 994379
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