forward to own domain

Hi,

How can I get procmail to forward a mail adressed to me(_at_)mydomain(_dot_)com 
to
you(_at_)mydomain(_dot_)com ?

Following does not work :-(

:0 c
* ^TO_me@
! you(_at_)mydomain(_dot_)com

:0 c
* ^TO_me@
! you

:0 c
* ^TO_me@
you

But this works for other domains:

:0 c
* ^TO_me@
! you(_at_)yourdomain(_dot_)com

Thank you!