MAIL AND ADDRESS BOOK
If blacklist and whitelist filters are enabled on the Domino server, your Domino Administrator can supply you with the list of names on the lists. You can also find this information in the Domino Directory. To view the lists, open the Domino Directory (NAMES.NSF) and expand Configurations. Open the server Configurations document - Router/SMTP - Restrictions and controls - SMTP Inbound Controls. The lists display under the DNS Blacklist Filters and DNS Whitelist Filters.
For more information on creating mail rules, see Filtering new mail using rules.