Folks, Seems I am being used as a relay for a spammer from Japan. My LSMTP box only allows connections from the listserv machine, unfortunately thats the machine he's using as a relay. Is there any way to tie down the system short of switching off sendmail ? As far as I can see I have to have sendmail allowing send/rcv from all domains on the listserv box, as that is how our subscribers modify their subscription options. Is there a modification I can make to either sendmail.conf to allow only legitimate listserv mail or to LSMTP to relay our stuff, but not the infidels? TIA, Damon Green, Webmaster - beeb.com.