RedHat9.0下Samba domain级服务求助

lostfire

系统：RedHat 9.0 安装时选择everything
Samba版本：samba-2.2.7a-7.9.0
防火墙级别为:none
现在想通过局域网中的windows域控制器来实现对Windows用户访问Linuix的验证
局域网中的域为it,Windows的域控制器系统NT4名字是pdc_1,IP 172.20.6.18
smb.conf有效配置如下：
#======================= Global Settings =====================================
[global]

   workgroup = it


   server string = Samba Server


   printcap name = /etc/printcap
   
   load printers = yes

   printing = cups


   log file = /var/log/samba/%m.log


   max log size = 0


   security = domain

   password server = *

   encrypt passwords = yes

   smb passwd file = /etc/samba/smbpasswd


   unix password sync = Yes

   passwd program = /usr/bin/passwd %u

   passwd chat = *New*password* %n\n *Retype*new*password* %n\n *passwd:*all*authentication*tokens*updated*successfully*


   pam password change = yes


   dns proxy = no

  socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192

#============================ Share Definitions ==============================
[homes]
   comment = Home Directories
   browseable = no
   writable = yes
   valid users = %S
   create mode = 0664
   directory mode = 0775

[printers]
   comment = All Printers
   path = /var/spool/samba
   browseable = no
# Set public = yes to allow user 'guest account' to print
   guest ok = no
   writable = no
   printable = yes

# This one is useful for people to share files
[tmp]
   comment = Temporary file space
   path = /tmp
   read only = no
   public = yes

加入域的命令：
smbpasswd -j it -r pdc_1

自己也查不出问题出在哪儿，麻烦大家帮忙了