confusion between Credentials

[Rahul Parasnis]

Hello ,
I have just recently installed Samba 2.2.1a on Solaris 8 .

share I created as users .

In the shares configuration I have allowed only specific users.

When I try to connect from NT , I type the Machine name and then it shows
me users share , till now it's fine .

Now When I enter some user name , it says network name is not valid . If I
don't specify username
then it connects with some username by which once I connected to this
server .

Why it connects with that user name ?

may this is very simple problem , but please help what settings  here is my
smb.conf .

# Samba config file created using SWAT
# from rparasnis.clj.co.jp
# Date: 2001/10/16 13:46:53

# Global parameters
[global]
     workgroup = DRSHOKEN
     netbios name = DRSUNFS1
     interfaces = 172.31.233.15/21
     encrypt passwords = Yes
     log file = /usr/local/samba/var/log.%m
     name resolve order = host
     default service = drshoken
     hosts allow = 199.103.103.0/255.255.255.0,172.31.0.0/255.255.0.0

[users]
     comment = Share for all the users at DRP
     path = /home/export/users
     valid users = tknt011,tknt012,tknt015,rahul
     read only = No


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