As Cathy mentioned, we came up with the "trouble" alias at an IETf
NJM meeting or some such a few years back.
The reason it wasn't developed with the granularity that Dorian and
others have described is that at that time, most of the providers only
had a couple of people who did everything, so it didn't really matter
how many aliases were used since the same couple of people answered
them all :-).
I expect that there are still quite a few providers who are running
in this mode now....
dave
