Hello Richard: On Wed, 20 Nov 2002 10:21:25 +0100 (CET), [EMAIL PROTECTED] (Richard Menedetter) wrote:
> Hi Samuel! > 19 Nov 2002, "Samuel W. Heywood" <[EMAIL PROTECTED]> wrote: > SH> The blacklisting of spammers doesn't do any good. The spammers will > SH> just use another forged email address and another fake domain name > SH> when they send out their next batch of mass-mailings. > nobody blacklists email addresses !! Yep, I know that. If they blacklisted email addresses, then the spammers could easily retaliate simply by forging the email addresses of real people who send legitimate emails. Also there are some viruses which forge the email addresses of innocent people as being the purported sender. I really hate it when someone sends a virus to me and accuses me of being the culprit who sent it to him. > SH> The only thing I know of which would be effective at stopping spam > SH> would be the tracing of the IP number from which the spam originates > SH> and then blacklisting the domains which are known to harbor spammers. > Exactly this is what is done. > Find spam friendly/misconfigured Mailservers, and block them. > there are a dozen services which can be queried via a DNS interface. My ISP refused to block a Nigerian ISP which was sending me spam consisting of piles of fraudulent business proposals. They refused to block the Nigerian ISP because some its subscribers use the ISP for legitimate activities. If they had simply blacklisted the ISP, then the ISP would have been forced to either clean up its act or to face having to go out of business. In the long run, none of the people who use the ISP for legitimate activities would have been hurt by such an adverse action against their ISP. The ISP would have been forced to clean up its act, or another ISP would have been established to take its place and to operate in a responsible manner. > SH> Some ISPs have blacklisted and have refused to forward all emails > SH> bearing a yahoo or a hotmail return address and emails which have > SH> been sent through the servers belonging to those offending services. > Actually they block IMHO mail from these domains, if they are NOT originating > from the domain's Mailserver. > gmx.net does this as well. Also my Unix shell account at "http://sdf.lonestar.org"; blocks emails bearing hotmail and yahoo addresses, even if they are not originating from the mailservers of those domains. This helps considerably to reduce spam. The only downside to their taking such an action is that emails from people who use hotmail and yahoo for legitimate purposes are also blocked. > This partly works, because many spammers use @yahoo.com or @hotmail.com fake > addresses, and naturally NOT use the Mailservers of these domains. Sam Heywood -- This mail was written by user of The Arachne Browser - http://arachne.cz/
