Problem With DNS (bind) and Login (RoundCube) use Virtual Users And Domains

[MAO]

Hello!!!
use this tutarial Virtual Users And Domains With Postfix, Courier And MySQL (Ubuntu 6.06 LTS)

And i have some questions:
1) When install BIND? (Solved)

2) How to Create new mail users? (need quick advice)

[falko]

Take a look at http://www.howtoforge.com/virtual-users-and-domains-with-postfix-ubuntu-7.10-p6