Hi everyone,

I'm new linux user and I want to use Postfix mail server in my company.
We actually use MS Exchange server. I installed Mandrake 10.0 into one
of our servers. I heard that that Red Hat is preferred system for server
side but I started with mandrake and I'll go with it.
So, my questions are:
1) Is it necessary that postfix server to be in windows domain?
2) I already installed samba server ,swat and webmin. Is it possible to add postfix users via webmin or I need to create user database?

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These questions are about samba server:

3) After installed samba, I can't add samba user. System gives me an
error like that :
Failed initialize SAM_ACCOUNT for user test_user.
Failed to modify password entry for user test_user
4) I can see my linux machine into windows network places but I can't
get in to reach shared folders. Does samba user's account have to be
same as windows user account?

thanks to everybody...