[Samba] problems with "net rpc shutdown" and smbclient after upgrade to samba 3.6.23

Howard Fleming hfleming at moosebird.com
Mon Apr 18 13:25:05 UTC 2016

Good morning,

Since the upgrade to samba 3.6.23 (Centos 6.7) last week, smbclient and 
"net rcp shutdown" are no longer working on my network.

A nightly a script runs that shuts down any workstations that have been 
left on:

net rpc -I SHUTDOWN -U username%password
net rpc -S workstation-name SHUTDOWN -U username%password

Before the update, this would shutdown the workstations without any 

Now I get these errors:

Could not connect to server name)
Connection failed: NT_STATUS_ACCESS_DENIED

I also have another script that backs up quickbooks on an accounting 

The script powers up the workstation, then runs:
/usr/bin/smbclient // -A /root/scripts/.qbsmbpw -Tc 

Now I get this error for the above command:
session request to failed (Called name not present)
session setup failed: NT_STATUS_LOGON_FAILURE

I have spent the last few days looking for a solution to the problem, so 
far no luck.

Any suggestions?

In case this helps, Global section from smb.conf:
         socket options = TCP_NODELAY SO_RCVBUF=16384 SO_SNDBUF=16384
         workgroup = MEINW
         server string = MEI Samba Server Version %v
         log file = /var/log/samba/%m.log
         max log size = 100
         add user script = /usr/sbin/useradd "%u" -n -g users
         delete user script = /usr/sbin/userdel "%u"
         add group script = /usr/sbin/groupadd "%g"
         delete group script = /usr/sbin/groupdel "%g"
         delete user from group script = /usr/sbin/userdel "%u" "%g"
         add machine script = /var/lib/samba/scripts/machineadd.sh "%u"
         logon path =
         logon drive = U:
         domain logons = Yes
         os level = 255
         preferred master = Yes
         domain master = Yes
         cups options = raw
         smb ports=139 445
         server signing = mandatory
         lanman auth = yes
         ntlm auth = yes
         raw NTLMv2 auth = yes

If there is any additional info needed, please let me know.


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