Test: AREAFIX-012

Case:
Netmail from a point to areafix to unsubscribe an area. Message is
scanned out and processed. The area is mandatory so the user cannot
subscribe the area.

Input:
FTN netmail from "Mr Point" at 2:200/111.15 to
"AreaFix" at 2:200/111.0, password "MrPointPwd".
-TEST_AREA in the body.

Output:
PKT file with reply
