On Mon, 6 Apr 1992 16:25:18 EST, Douglas J. Coffman <LEFTY@MTUS5> wrote:
>
>     >Is [log in to unmask] an invalid address?
>
>     The machine that answers to that name is down just now for some
>super-major refits.  We hope to have it back receiving mail this week.
>
>Chris Johnson, postmaster at Northeastern University.
 
Note that the hostname "lynx.northeastern.edu" has been removed(!!!)
from the database held by the name-server, i.e., "helios.northeastern.edu".
Thus, it **is** an invalid address.  Sigh!
(Had they left that name in the database, we list-owners would only be
handling "unable to deliver for NNN days" messages, rather than "unknown host"
error messages. Sigh!)