Check email length

src/freedombone-config

@@ -917,12 +917,15 @@ function interactive_configuration {
   done
   save_configuration_file
 
-  while [ ! $MY_EMAIL_ADDRESS ]
+  while [ ${#MY_EMAIL_ADDRESS} -lt 5 ]
   do
       EMAIL_ADDRESS=$(grep 'MY_EMAIL_ADDRESS' temp.cfg | awk -F '=' '{print $2}')
       if [ ! $EMAIL_ADDRESS ]; then
           EMAIL_ADDRESS=$MY_USERNAME@$DEFAULT_DOMAIN_NAME
       fi
+      if [ ${#MY_EMAIL_ADDRESS} -lt 5 ]; then
+          EMAIL_ADDRESS=$MY_USERNAME@$DEFAULT_DOMAIN_NAME
+      fi
 
       data=$(tempfile 2>/dev/null)
       trap "rm -f $data" 0 1 2 5 15