On Sat, 13 Nov 2004, Cigan Segun wrote: > My office runs a cybercafe. Customers are only allowed to use web based > mail like yahoo, hotmail, excite, etc and NOT outlook express or any > other mail clients.
> The problem: what can I do to check all their mails in order to stop the > ones that are spams? Well, there are at least two unusual things here: 1. Trying to use Spamassassin for blocking *outgoing* spam. Most sites use SA to block *incoming* spam. But SA could be used to block outgoing spam; perhaps someone is already doing that (with a customized selection of rules). Something easier would perhaps be to limit the number of reciepients of mail per hour for the users. All of this assumes you are in charge of the mail flow: 2. As you say, there is no mail traffic from your place. Just web requests. It would be a less simple task getting SA to intercept web postings. Maybe someone has done it, perhaps as part of a blog / guestbook anti-spam-measure (but then at the server side). Maybe the "real" solution is for Yahoo, Hotmail (and other ad-based / free mail providers) etc to implement anti-spam on outgoing mail. And besides, this makes me ask: how many spammers are really just using a Hotmail account and sending lots of messages? I thought most spammers used special software, open relays etc; I think the free-mails already have some rough antispam like message number limits. Also, sending from hotmail without lots a work generates identical spam messages, which means they are possible to catch with f.x. Razor. Sound like pretty lame spammers ... ? perhaps not very helpful, but a starter at least ... Per Eric -- ^): Per Eric Rosén http://rosnix.nu/~per/ / [EMAIL PROTECTED] GPG 7A7A BD68 ADC0 01E1 F560 79FD 33D1 1EC3 1EBB 7311
