not able to access samba share by hostname in solaris10

Hi,
I am facing strange problem with my solaris 10 box. I have configured samba share there.
I am able to access that samba share by ip address of the solaris machine but not with the hostname.

Below is my /etc/sfw/smb.conf file.

bash-3.00# uname -a
SunOS Dataplus 5.10 Generic_141445-09 i86pc i386 i86pc
bash-3.00#

bash-3.00# cat /etc/sfw/smb.conf
# Samba config file created using SWAT
[global]
        workgroup = EXAMPLE.COM
        server string = Dataplus - Samba Server
        security = SHARE
        password server = example.com
        preferred master = No
        local master = No
        domain master = No
        wins server = X.X.X.X