You could block all unauthenticated mail from that IP address. Your users would have to reconfigure their MUAs to authenticate (if they aren't already) but that should stop the spam.
You could also turn on graylisting. Most spambots aren't smart enough to retry their deliveries. -- Sam Clippinger Marco Aurélio wrote: > Well, i must say that i have a lot problems with the specific case: > > I have some customers that use one conection from my ISP and that > conection have just one IP, ok... i use this line on my /etc/tcp.smtp: > > 192.168.0.1:allow,RELAYCLIENT="",RBLSMTPD="",MAXCONNIP="2",CHKUSER_RCPTLIMIT="50",CHKUSER_WRONGRCPTLIMIT="2" > (let's assume that IP) > > Ok. Then... if some of those customers get infected by some virus, > they send to my server large amount of e-mails, i can't block the ip, > because i'll block about 40 or > maybe 50 customers and i can't block one specific user, because the > virus changes the user all the time like: > > [EMAIL PROTECTED] > [EMAIL PROTECTED] > [EMAIL PROTECTED] > [EMAIL PROTECTED] > > And of course i can't block the hole domain. > ______________________ > Atenciosamente, > Marco Aurelio > Tecnologia > Fone: 3288-2000 > Fax: 3288-2040 > SecrelNet Informática > www.secrel.com.br > ______________________ > > > > John Devenport wrote: >> Yes, but I wanted to test both the things to find out which is better >> for my environment. >> Is there anyone with the same problem? >> >> >> Arthur Girardi ha scritto: >> >>> If I got it right, you receive spam from external host claiming to be >>> from your own domain? Is that it? >>> >>> Wouldn't this be a case for SPF checking? >>> >>> Arthur >>> >>> >> >> >> >> -- >> Email.it, the professional e-mail, gratis per te: http://www.email.it/f >> >> Sponsor: >> Polizza auto? >> * Furto e incendio a soli 30 euro per 1 anno! Calcola il tuo preventivo e >> assicurati il risparmio! Non perdere l’occasione! >> * >> Clicca qui: http://adv.email.it/cgi-bin/foclick.cgi?mid=8426&d=26-11 >> _______________________________________________ >> spamdyke-users mailing list >> [email protected] >> http://www.spamdyke.org/mailman/listinfo/spamdyke-users >> >> >> > ------------------------------------------------------------------------ > > _______________________________________________ > spamdyke-users mailing list > [email protected] > http://www.spamdyke.org/mailman/listinfo/spamdyke-users > _______________________________________________ spamdyke-users mailing list [email protected] http://www.spamdyke.org/mailman/listinfo/spamdyke-users
