Here's the contact info from the PEERS db: >>> Item number 213, dated 96/05/21 09:26:51 -- ALL Nick: 653 Node: MAIL.EWORLD.COM Userid: LISTSERV Net: Internet Site: eWorld, Apple Online Services, Cupertino CA, USA Country: US System: HP-UX A.09.04 Machine: HP 9000/867 Contact: (Jean Marie Diaz) [log in to unmask] (+1 408 974 0627) Type: unix Version: 1.8b Backbone: YES Links: UCBCMSA The LISTSERV is operated on a host by the name of MAIL.EWORLD.COM. That host is served by TWO Mail eXchangers (according to DiG): mail3.online.apple.com (most preferred) mail2.online.apple.com (least preferred) The lookup of hostname-to-IP address is handled by 4 DNS servers: APPLE.COM COLOSSUS.APPLE.COM HP1.ONLINE.APPLE.COM HP3.ONLINE.APPLE.COM The first three are currently responding (and are consistent wrt MX and A records). The last is non-responsive to DiG, but is responding to PING. Both MX hosts support the RFC protocol for EHLO. The most preferred host responds thus to EXPN and VRFY: expn listserv 250 <"|/usr/local/bin/lsv_amin /users/listserv/spool listserv"@mail3.online.app e.com> vrfy listserv 250 <[log in to unmask]> The least preferred does not recognize LISTSERV (and presumably forwards to the most preferred when it is available, unless there is an MX config problem with MAIL2.'s SENDMAIL). You could try some sample e-mails to: [log in to unmask] and [log in to unmask] noting the RECEIVED line headers and timestamps. /Pete Weiss at Penn State