vi...@vheuser.com: > I am receiving spam from ever changing client IP addresses. Each spam has > other tiny variations that prevent string matching. The one thing they all > have in common is the owner of the IP addresses. Is there any way to do > lookup of the client IP owner at Prescreen or SMTP time to REJECT the > incoming connection? Is this a workable solution? I've searched the web, > the documentation and archives. No luck. Does anyone have a solution or > script? Thanks!
Find or build a policy daemon, milter, or content filter that queries the whois service, I suggest using a local cache to speed up lookup latency. http://www.postfix.org/SMTPD_POLICY_README.html http://www.postfix.org/MILTER_README.html http://www.postfix.org/FILTER_README.html Wietse
