>*please* tell me it's not a Solaris so old that it still has the @@ bug >in expanding a null MAIL FROM:<> into a Return-Path? ;) > >If so, there's a patch at ftp://ftp.lsoft.com/listserv/unix/contrib If this is the case, a better fix would be to upgrade sendmail. If I recall correctly, that patch is for sendmail 8.6, which is about as insecure from spam as you can get. Nathan