In the sample screen, the
enhanced-list mailbox community is set as Community 10. A special
subscriber community, Community 9, is administered to send to
all communities (except the shadow mailbox community). Only subscribers
you would like to have access to the enhanced lists are placed
into Community 9. The shadow mailbox community ID is set as Community
11. The shadow mailbox community ID in the sample is administered
so that messages can be sent to any community, but messages cannot
be received from any other community. Note the r in sender community
1 and recipient community 10; it represents restricting users
in the default community (1) from using the enhanced-lists.