You know, in the world of e-mail servers use of RBLs (Realtime Blackhole List) to reject messages sent from open relays, proxies, spammers is a common practice.
Some of the RBL services are free, and I think they can be used to reject posts of the users whose originating IPs are registered to be open proxies.
It's a simple approach, just make a query to DNS server and analyze the result.
Currently, it's almost impossible to ban somebody's network. He can always find some open proxy and post what he wish through it.
Some of the RBL services are free, and I think they can be used to reject posts of the users whose originating IPs are registered to be open proxies.
It's a simple approach, just make a query to DNS server and analyze the result.
Currently, it's almost impossible to ban somebody's network. He can always find some open proxy and post what he wish through it.
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