Path: utzoo!utgpu!watserv1!watmath!att!linac!pacific.mps.ohio-state.edu!zaphod.mps.ohio-state.edu!samsung!uunet!munnari.oz.au!cs.mu.OZ.AU!kre From: kre@cs.mu.oz.au (Robert Elz) Newsgroups: news.software.b Subject: Re: Multicast. Message-ID: Date: 24 Apr 91 17:42:16 GMT References: <1991Apr22.203214.25117@sequent.com> Sender: news@cs.mu.oz.au Lines: 35 brians@sequent.com (Brian Sheets) writes: >Can someone explain how multicast is used. I have a news group >that I want to mail to a few users. Assuming this is a question about B news (I'll leave it to Henry if you're asking about C news) an example might show it more clearly than any words ... This is from my sys file (with mail addresses changed to protect the innocent): a1@b1.c1.d1:world,aus,!aus.all,aus.jokes,!aus.jokes.d:M:NewsMail # cs.footy to hordes around the world ... a2@b2.c2.d2:world,cs.footy:M:NewsMail a3@b3.c3.d3:world,cs.footy:M:NewsMail a4@b4.c4.d4:world,cs.footy:M:NewsMail # aus.jobs to random foreigners... a5@b5.c5.d5:world,aus.jobs:M:NewsMail a6@b6.c6.d6:world,aus.jobs:M:NewsMail # other misc aus groups to foreigners... a7@b7.c7.d7:world,aus.auug,aus.archives,aus.netstatus,aus.jobs,\ aus.sun-works:M:NewsMail # NewsMail:all:OS:/usr/lib/sendmail -oi1 -odi -oeq %s There is actually lots more in there than that, but I think that you get the idea. Basically one news article starts one sendmail, with a list of addresses of those to whom the article should be sent. The "NewsMail" line must be last (of this group at least). Obviously B news must be compiled with MULTICAST enabled for this to work. kre