two small question for a new user of OTRS

in OTRS 1.13, where we configure the auto-answer ? (sorry for my english)

When i sent a email to my server, the ticket are created (good) but :

1- The user that open the ticket don't receive the number etc ...

2- The Technicien don't receive a information of a new tickets are created ..

by cron, i start only PostMasterPOP3.pl for check the email, it's a other script that sent the auto-answer ?

II)

It is possible that put un ticket number ?:

20040105.0019 or 20040105-0019

(yearmounthday.ANumber at 4 digit)

If yes, where ?

Thanks for your help