The man at the UK computing help desk said it was because of spam coming
from those addresses.  

Elizabeth Trotter

-----Original Message-----
From: LISTSERV list owners' forum [mailto:[log in to unmask]] On
Behalf Of [log in to unmask]
Sent: Tuesday, August 02, 2005 1:10 PM
To: [log in to unmask]
Subject: Re: Subscriber can't post to list

"LISTSERV list owners' forum" <[log in to unmask]> wrote on 
08/02/2005 11:06:23 AM:
 
> It seems like I'm always hearing about "blocked" addresses or ISPs.  Is
> there any such thing as adding addresses to an "approved" list instead 
of a
> "blocked" one at the list administrator's level?

Yep, they're called whitelists.  Blocked servers/domains/addresses are 
blacklists.

The questions is, "How did that address end up being blacklisted?"