configuration to mailbox

[Sathya M <gotosathya@xxxxxxxxx>]

Hi all,
  I have doubt in /redhat linux 9.0, here is my requriements

1) Need to configure or create GLOBAL ADDRESS LIST for
my users. if is it possible then how??
2) copy of all mails should forward to a common
mailbox

Thanks in advance.

Regards,
Sathya