On Tue, 13 Jul 1999 11:34:15 -0400, Paul Karagianis <[log in to unmask]> wrote:

>One owner reported the bizarre
>experience of having commands respond and postings fail (to be repro'ed)
>to him, which would suggest a null-RCPT spam-filter doing the opposite of
>what would normally be intended.

As has been mentioned elsewhere, a primary link in the LISTSERV backbone (SEGATE
in Sweden) was down for several days.  Command responses go directly.  List mail
(including digests) travels by the backbone and if a key link/hub server is
down, it can fail. SEGATE was restored yesterday some time.