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#! rnews 1123 bsd Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!uunet!in3.uu.net!204.89.181.3!en.com!news.maxwell.syr.edu!newsfeed.internetmci.com!news1.bellglobal.com!bellglobal.com!not-for-mail From: "jon" <abyss@cyberbeach.net> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Sendmail Question Date: 9 Jun 1997 15:03:59 GMT Organization: Bell Network Solutions Lines: 14 Message-ID: <01bc74e6$97d8d000$1c29eccf@shadow.cyberbeach.net> NNTP-Posting-Host: 207.236.41.28 X-Newsreader: Microsoft Internet News 4.70.1161 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:42648 I've got my unix box working no problem with multiple domains on the same machine, but I have a question about fine tuning the configuration. Is there any way to prevent people from 'impersonating' other domains on the machine ? ie I've got username1@company1.com and username2@company2.com Because my machine happilly responds to both domain names, nothing prevents any of the users on the machine from adopting the domain name of any of the domains the machine handles. Is there any way to prevent this ? TIA