This is just an educated guess (based upon some probing and other facts this a.m.): WEBTV.COM users get their MITVMA.MIT.EDU LISTSERV distributions via the LISTSERV backbone at PLUM.EASE.LSOFT.COM. A delay in one of the lists that I subscribe to in DIGEST mode and that uses that related backbone site, says to me that PLUM (LISTSERV, SMTP, ???) was not distributing until Fri, 5 Mar 1999 8:29:20 -0500 WEBTV users could have mailto:[log in to unmask] to verify this guess. /Pete Weiss at Penn State