Linux OS for server

[daredevilcsl]

What's the command you have to run? I have no experience whatsoever with mail servers, but writing a script to do it would probably be possible.

i'm not very sure either....some how the command below does seems like adding the user

$ userdb "some_user_name" set home=/home/user_dir \
mail=/home/user_dir/Maildir \
uid=users_userid gid=users_groupid
$ userdbpw | userdb "some_user_name" set systempw