minor list changes

[Tony Duell]

> Tony, I think you're missing something here. ISP's pretty much always have 
> secondary and tertiary mail servers. Just taking down ONE server doesn't 
> make your mail bounce. The classiccmp server would try the secondary. For 
> example, your ISP (demon.co.uk) has two mail servers set up. Surely they 
> don't take BOTH of them down for maintenance at the same time ;)

There ahve been a few times when demon has (AFAIK) accepted no incoming 
mail at all. Maybe because both servers are down, maybe because of 
network problems (which may not actually be the fault of demon), 
maybe.... I don't try to understand what the problem is, I have enough 
trouble keeping my machines running, without bothering about machines I 
can't get to fix anyway...

-tony