On Fri, 22 Sep 2000 11:42:51 +0100, "Russell, D (Duncan)" <[log in to unmask]>
wrote:

>a) Several users appear to have been subscribed to a mailing list with an
>option described as;
>Header-Style: Special or obsolete header style

This would either FULL822 or SHORT822.  Both are obsolete and likely to
disappear from future versions of LISTSERV.  Prefered (and Default) setting is
FULLHDR.  The owner or the user can change this via the WWW interface or via the
SET listname FULLHDR command by email.

>b) Also one subscriber had a message sent to him with a from: field in the
>header which was identified as listname*a*-b*-xxxxx**rl*-ac*[log in to unmask],
>any ideas why this one user might have had this in the from: field and not
>the usual [log in to unmask]

Not the From:, but the RFC821 return-path.  They must have a very strange mailer
pgm, or a very badly configured one, for this address to be visible.  This is
LISTSERV's PROBE format for testing the validity of email addresses during the
course of regular list mailings.  If the message should bounce, it will be
returned to LISTSERV, containing the server_name, listname, and
address-as-mailed-to which is everything LISTSERV needs to know to 'count' bad
addresses and eventually (according to your List Header settings) to autodelete
the bad address.