​for ccc.com - as a 40 year old domain  and a 3 letter one at that, spam was never ending.  I gave up when Google asked me to beta test Google Apps for business.   Now the cost of having them do it for me is so cheap, I really can not justify running it myself.  Same for my DNS for my class C, I moved it all upstream to easyDNS in Canada (great bunch BTW and pricing is super).

Now I live downstream of a 1G fiber.   The Firewall is fairly hot because of my domain, so many nut cases tap on it; but my logs show its been stable for a long time since I have it locked down pretty tight.    At one time, I had some of Ches's mapping stuff running that gave me a pseudo-real time map of where the attacks were come each day (mostly script kiddies).  But, we had a flood in the basement and that system got decommission since I got bore looking at it.  I fear, those bits are rotted.

Anyway moving Mail and DNS upstream did clean up spam and while it did not rid of the attacks, but it certainly let the primary defense be done at places better set up to handle them me personally and I bought back much of my day.

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