Hello FreeBSD people!

I have a smtp server under attack by what seems like a large botnet. My inetd is choking under the load and not allowing real mail through. I've successfully used tshark to find the offenders and put them into ipfw firewall for port 25.

So here is my question, I'm currently blocking 55,529 ip addresses and the server seems pretty snappy, with no noticible load or lag. How many more rulesets will I be able to handle before things start getting fuzzy?

Best Regards,

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