Hi, everyone: The number of subscribers just max out our UNIX sendmail. We are experimenting to use NT LSMTP to diliver our UNIX Listserv mail. I have NT 4.0 server with 200 thread LSMTP and distributed-only Listserv installed on a Pentium 166, 64 MB memory and an Ultra-Wide SCSI HardDrive with plenty of bandwidth to Internet. Three questions: 1. How do I configure the UNIX Listserv (1.8b) so that it send out one mail to the distributed-only Listserv and from there, explode to all the subscribers. 2. Does anyone has any performance estimation of such configuration? 3. I think the next logic move is to move UNIX Listserv all together to NT. Does it make sense? Thanks George Tsai