NW5.1 server
Single NIC
3rd Party manages the border
Groupwise 5.5 latest SP

Server used to be border, since 3rd party assumed the border, all ports
ae open. Server is used only for mail and printing. Server looks like an
open relay since it is GW5.5. Spammers are hitting the port heavy.
Redircted mail thru a mail scrubber and took away the bottleneck, but
spam is comming in. Added a filter for smtp to come in only from the
mail scrubber server, this killed the spamming, but also killed the
NDPS communications. Unload filter, NDPS comes back online.

I have attempted to set filters for the following ports:

None of the config have worked. Any ideas?