[Samba] Smbclient to send messages

[Jonis Maurin Ceará]

Hi.

I'm trying to send messages to XP users on my domain but i got this error:

bmw:/tmp# smbclient -M diretoria02
Connection to diretoria02 failed

I also got this:
bmw:/tmp# nmblookup diretoria02
querying diretoria02 on 127.255.255.255
querying diretoria02 on 192.168.255.255
192.168.0.25 diretoria02<00>


What could be?

My client is runing WinXP SP2 with firewall disabled