[Mimedefang] filter feedback desired

[Isaiah]

If there is a more appropriate list for this question please bring it to 
my attention.

I searched the mailing list archives and pieced together what I believe 
is a solution, but would like some feedback.

My aim is to snag emails with a particular envelope address and redirect 
them to another envelope address.

So, in filter_end I have:

if ($Sender eq "email at address") {
     foreach $recip (@Recipients) {
         delete_recipient($recip);
     }
     add_recipient(other at address);
}

Comments?

	- Isaiah