CommuniGate Pro Domains can contain Mailing Lists. Each Mailing Lists has a name and it always belongs to some Account in the same Domain - the Mailing List owner.
A Mailing List contains a list of subscribers, and it maintains several Mailboxes in the list owner Account. Those Mailboxes are used to store and archive postings, generate digests, store subscription requests and error reports.
Groups and Mailing Lists are different:
See the LIST section for more information about CommuniGate Pro Mailing Lists.