creating users

[Norman Zhang]

Hi,

I'm a little confused on the process of creating users. First I "su cyrus"
then I typed the following commands,

> cyradm localhost
> cm user.joebob
> quit
> exit (back as root)
> saslpasswd joebob

Now does joebob require an account on my Linux box? Also if the email
address for joebob is joe.bob at domain.com, do I use postfix alias mapping to
pass mail to joebob? To allow users' to change password on their own do I
need web-cyradm?

Regards,
Norman