Why would you use iptables for that? Reasonable MTAs nowadays have a feature which honors blacklists. If you want to do the blocking yourself you will need some script or whatever to collect the IP addresses of spamming hosts - and the tricky part will be how you know IN ADVANCE if a host will spam you ;-) By uing blacklists your can increase your chance because a spamming host will mabye already make it into the blacklist database bofore he attempts to spam you. Hope I made sense ;-) Erwin --- Axel Leitner wrote:
Hello everybody,
has someone a suggestion how to block unauthorizied spam access with an iptables rule thru 25/tcp ?
Bye
Axel
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