[Samba] Cannot authenticate from Mac

[Mark Kerr]

​I cannot access the Samba shares on my Ubuntu server from my Macbook. ​


​I do not know if I am interpreting the logs correctly, but I think the
username is not being passed to the server​
​ ("[]\[]@[]"), resulting in a log in as guest.

​
​I am entering my user credentials while attempting to mount the share, and
have also tried mounting from the terminal passing my username:password.

​
​The user name does exist both in the system and in Samba. ​
​

On the other hand, I just noticed that smbstatus shows 2 processes for my
user name from my Macbook's ip address. So I am at a loss as to what the
problem is.

I am running Samba v4.1.11.​


​Below is a snipped of the logs which I was referring to. The log entries
are the same​
​ each time I try to mount one of the shares:​

---
​  ​
check_ntlm_password:  Checking password for unmapped user []\[]@[] with the
new password interface
[2014/10/08 22:48:20.831374,  3]
../source3/auth/auth.c:180(auth_check_ntlm_password)
  check_ntlm_password:  mapped user is: [
​MYSERVERNAME​
]\[]@[]
[2014/10/08 22:48:20.831474,  3]
../source3/auth/auth.c:226(auth_check_ntlm_password)
  check_ntlm_password: guest authentication for user [] succeeded
---

This is my smb.conf:
--
[global]
  workgroup = MYWORKGROUPNAME
  server string = %h server (Samba, Ubuntu)
  netbios name = MYSERVERNAME
  dns proxy = no
  log file = /var/log/samba/log.%m
  max log size = 1000
  syslog = 0
  log level = 0 auth:3
  panic action = /usr/share/samba/panic-action %d
  security = user
  encrypt passwords = true
  passdb backend = tdbsam
  obey pam restrictions = yes
  unix password sync = yes
  passwd program = /usr/bin/passwd %u
  passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:*
%n\n *password\supdated\ssuccessfully* .
  pam password change = yes
  map to guest = bad user

  usershare max shares = 100
  usershare allow guests = yes
  allow insecure wide links = yes
  unix extensions = yes

[homes]
  comment = Home Directories
  browseable = yes
  read only = no
  create mask = 0775
  directory mask = 0775

[sysvol]
  path = /var/lib/samba/sysvol
  read only = no

[netlogon]
  path = /var/lib/samba/sysvol/localdomain/scripts
  read only = no

[Storage 06]
  path = /media/Storage 06
  available = yes
  valid users = myname
  read only = no
  browseable = yes
  public = yes
  writable = yes
  follow symlinks = yes
  wide links = yes

[Storage 08]
  path = /media/Storage 08
  available = yes
  valid users = myname
  read only = no
  browseable = yes
  public = yes
  writable = yes
  follow symlinks = yes
  wide links = yes
--

Thanks,
Max