to compile it with various DB libs... Why not...
SQL backend for greylisting and most other stuff is pretty pointless and awkward to set up. My own perl greylister simply stores everything in memory and easily performs 5000+ requests per second. If you need more redundancy, you could simply use say Redis which performs as well.
5000+ it's nice :) Is it able to do global site whitelisting? Is it able to do global site blacklisting? Is it able to provide real time reports?Is it able to detect attacks on your messaging system and stop them in less than 5 minutes? Is it able to interact with users to manage every user's sender white list, sender black list, recipient white list, and even interact with grey list? Is it able to automatically clean bad traffic (bounces and long term defers) from mailing lists? Is it implementing extremely complex rule system with management of priorities?
Tell me your features and we'll see, if you have same as GreyLSE features, if 5000+ will still be there :)
What's the name of your product? I would be very interested to take a look any way :)
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