On 12/24/05, Rainer Duffner <[EMAIL PROTECTED]> wrote: > dny wrote: > > >i want to block virus that act as smtp server by themselves. > >they spreads without connecting to any smtp server. > >because they have built in smtp engine. > > > >how to block these kind of mail not going out of my internet? > > > > > > > Create a DMZ. Place the real SMTP-server in it. > > Only allow the real SMTP-server access to port 25. > > Allow clients only access to the DMZ. > > Install clamav on the mailserver, so infected mails don't spread through it. > > Bingo. > > For bonus-points, install a throttleing-patch on the mail-server, so > that a run-away zombie in your intranet can't DoS it. > > That's all. > > We're an ISP and it's really a pain to try to explain to clients that > they indeed *DO* have a virus-infected PC inside and are trying to > send-out viruses (which we stop). > > > > cheers, > Rainer > > >
exactly what i need. can you please give more detailed? perhaps step-by-step guide will be greatly appreciated. tia dny www.ngobrol.com ... but that which cometh out of the mouth, this defileth a man. Mat 15:11
