Mail ist bounces?

[Federico Nebiacolombo]

Hi everybody,
            just few line to ask if it is normal that when I
send a mail to svn-it at red-bean.com (italian mail list)
I receive two exact copies(!) of my mail mail, every mail copy has this
sign:

From: svn-it-bounces at red-bean.com
To: svn-it at red-bean.com

There is something wrong on my side?
I underline that this is not a great problem to me, but it is boring to
delete the second copy
from my mailbox and if you can reduce (half) mail traffic this could be  ok
on net.

best regards
Nebiac