The acceptance by a nonresident attorney of the rights and privileges of the practice of law within this state, as evidenced by his practice of law in this state, shall be deemed equivalent to an appointment by such nonresident attorney of the Executive Director of the Mississippi Bar to be his true and lawful attorney, upon whom may be served all process summons or notice of any and all proceedings against him instituted pursuant to and conducted under these rules of disciplinary procedure; and the acceptance of such rights and privileges and the practice of law by any such nonresident attorney in this state shall be a signification of his agreement that any such process, summons or notice against him which is so served shall be of the same legal force and validity as if served on him personally.

Notice of the service of such process, summons or notice, together with a copy of any complaint or charge, shall be mailed forthwith by the executive director by United States certified mail or registered mail, return receipt requested, restricted for delivery to addressee only, and with postage prepaid, to such nonresident attorney at his last known address.

When such process, summons or notice is served as herein provided it shall be deemed sufficient to give the court, and its disciplinary agencies provided for herein jurisdiction over said nonresident attorney for the purpose of investigating and finally determining any complaint or charge touching upon the professional conduct or conduct evincing unfitness for the practice of law or the personal incapacity to practice law of any such nonresident attorney.