mailutils didn't create mailbox for user(?)

[thufir]

I was having trouble opening a mailbox:

http://askubuntu.com/questions/735337/


the solution was to add the direcotory by hand:

thufir at mordor:~$ 
thufir at mordor:~$ sudo touch /var/mail/thufir
thufir at mordor:~$ sudo chown thufir:mail /var/mail/thufir
thufir at mordor:~$ sudo chmod o-r /var/mail/thufir
thufir at mordor:~$ sudo chmod g+rw /var/mail/thufir
thufir at mordor:~$ 
thufir at mordor:~$ mail
No mail for thufir
thufir at mordor:~$ 


however, this system was, literally, just installed.  When I installed 
the mailutils package, why didn't it create the user correctly?


(I installed the mail-stack-delivery package first.)



thanks,

Thufir