Bounce handling -- rtbouncehandler download link or alternatives

Is anyone aware of a download link for rtbouncehandler documented at
Login? (That page in the
wiki – presumably copied and pasted from elsewhere – simply says that
the Perl source “is an attachment to this ticket.” Googling brought up
a few posts from the mailing list archives and links to the wiki page,
but nothing that indicated where it could be downloaded from. I also
tried searching the RT issue tracker, but didn’t come up with any
matches there either.)

Alternately, what other mechanisms exist for alerting the owner of a
ticket when a requestor’s or watcher’s address associated with the
ticket is generating bounce messages?

Thanks!

Mark Roedel
Senior Programmer / Analyst
LeTourneau University
Longview, Texas USA