Automatic Reply from Distribution List

I need create a account and all email are send to 3/4 person... when a person write at this account receive back a email with a statict text

I have create a email cv@mydomain.com in to email group with "distribution list" and I have add 4 user and is all ok, when a person write at cv@mydomain.com the other 4 person receive the email... now I want reply at the sender a text "We have received your messagge.... bla bla bla"