Redmine

I'm trying to get emails to forward to Redmine from a Univention UCS server using rdm-mailhandler.rb and I can't seem to get it working. What I've done so far/configuration:

UCS Domain: mydomain.intranet
Redmine Server/location: http://redmineserver/redmine

I've put rdm-mailhandler.rb in /var/mail on the UCS DC server and made it executable with chmod +x.
I've created a user called "redmine" in both UCS and Redmine (Ldap) with the email redmine@mydomain.intranet.

In the Univention Configuration Registry I've added an entry as follows:
UCS Variable: mail/alias/redmine
Value: "|/var/mail/rdm-mailhandler.rb --url http://redmineserver/redmine --key <my-API-key> --project defaultproject --tracker bug --priority normal –-allow-override tracker,priority"

From what I understand, this SHOULD push any emails received at redmine@mydomain.intranet to rdm-mailhandler.rb with the associated flags. No matter what I try, the emails just pass straight through to the inbox for redmine@mydomain.intranet and do not get pushed to the app. Any ideas on what I'm missing?

-David