On Mon, 2003-07-21 at 08:29, Zenon Panoussis wrote: > There are, basically, three kinds of spammers: those using > their own IP space and ISPs specialised in spam, those using > open proxies and those using throwaway accounts with normal, > respectable ISPs. > > The spam and open relay blacklists that have developed in > the past years are offering some remedy against the first > two kinds of spammers. Far from perfect, but yet much better > than nothing. Blacklists integrate nicely with courier; with > half a configuration line they're up and running. > > Time, perhaps, to do something about the third kind of spammer, > the kind that takes a dial-up subscription, pays the first month, > spams full blast over a weekend and is gone by Monday morning > when the bomb of spam complaints hits the abuse desk. > > Something like courier's MAXRCPT, but counting per day instead > of per message. Something that says "no single IP in the range > a.b.c.d/x can send to more than 1000 recipients per day, no > matter what". A default limit which no normal user will ever run > into, but which would all the same make the service useless to > any spammer. This would allow ISPs to put a limit to their own > customers, while still accepting any amount of mail from "foreign" > servers. That, in turn, would invalidate the whole concept of > throwaway accounts. > > You see, the whole idea of a throwaway account is to use the > ISP's SMTP server. If the spammer uses his own SMTP server on > his dial-up, he will be blacklisted in no time. Legitimate > ISPs though, who deliver a lot of legitimate mail, don't get > blacklisted as fast (and shouldn't either). That's the loophole > that needs closing. Closing it would also enable the blacklists > to implement stricter ratios for listing ISPs who still emit > a lot of spam together with their legitimate mail. > > First mail server to offer the feature wins the year's anti-spam > awards ;)
Nice feature. But seems a little complex to do. I believe that Sam don't want to do that. ------------------------------------------------------- This SF.net email is sponsored by: VM Ware With VMware you can run multiple operating systems on a single machine. WITHOUT REBOOTING! Mix Linux / Windows / Novell virtual machines at the same time. Free trial click here: http://www.vmware.com/wl/offer/345/0 _______________________________________________ courier-users mailing list [EMAIL PROTECTED] Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-users
