It's important not to send a request for a subscription to the list itself. Be sure that you correspond with the computer software that maintains the list of subscribers. Because you're writing to a computer program, send the commands correctly. There's not much room for creativity here. Notice that some subscription commands request that you insert your first and last name after the command, but others do not.
Tile maintains a searchable list of internet discussion groups at tile.net .
If you don't see something here, you might want to search for it there.