5 Miss. Code. R. 4-3.11
The DBCF may give notice to any person that a declaratory opinion has been requested and may receive and consider data, facts, arguments and opinions from persons other than the requestor.
The requestor, or his attorney, shall append to the request for a declaratory opinion a listing of all persons, with addresses, known to the requestor who may have an interest in the declaratory opinion sought to be issued, and shall mail a copy of the request to all such persons. The requestor or his attorney shall certify that a copy of the request was mailed to all such persons together with this statement: 'Should you wish to participate in the proceedings of this request, or receive notice of such proceedings or the declaratory opinion issued as a result of this request, you should contact the DBCF within twenty days of the date of this request.'
5 Miss. Code. R. 4-3.11