Re: [swinog] RBL's (again) (Was: Anyone from Green here?)

:: Greylisting only delays mails. Proper spammers just use ISP relays and

Well recent analysis show that % of open proxies and botnets using fake smtp are still quite important.

:: as the 450 is recognized and spam run you again later. So many easy ways :: around it and it only causes annoyance.

actually I experience efficient results with ways to slow down connections to spammers. I doubt many spammers will create bots that act as real smtp gateway with the first bounce of the handshaking, doing this for 100+ or 1000+ hosts would slow down the process on their side.

However never use only one technique, but cook some mixed recipes..

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