At 03:09 PM 7/25/03 +0300, Turgut Kalfaoglu wrote:> >How does one go about blacklisting an entire network, say for example > >[EMAIL PROTECTED] does not seem to work?
If you have the option; block it from the firewall OR router. It saves SO much overhead!
Actualy, it is the lowest overhead to 5xx it at the MTA level.. if you block it at the firewall or router, it will keep trying repeatedly to connect to deliver the mail..
That unfortunately assumes that the software that spammers use to send spam actually listens to 5xx MTA rejections - in fact 90% of them don't, they just drop the connection and try again and again despite the 5xx rejections...(thats one almost sure fire way of picking out a spammer from someone genuine - any genuine sending MTA won't try repeatedly to send the same messages after 5xx rejects)
Regards, Simon
------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Spamassassin-talk mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/spamassassin-talk
