Hints on rate limiting

[Dave Horsfall]

FreeBSD 9.3-RELEASE-p5 (GENERIC) #0: Mon Nov  3 22:02:57 UTC 2014

fxp0: <Intel 82801DB (ICH4) Pro/100 VM Ethernet> (on board)

I'm having trouble with getting rate limiting to work i.e. so many 
connections from the same source in so many seconds (what we in the 
anti-spam community call "woodpeckers").

Does it actually work on FreeBSD 9?  I know that PF doesn't work at all on 
FreeBSD 8 (at least, with the NIC above), and if it does indeed work then 
what would be a good starting point?

Note that a complicating factor is that I have configured a "greet pause" 
of 10 seconds i.e. after the connection I wait for that long before 
issuing the SMTP greeting (and woe betide you if you don't wait in turn).

And before anyone asks me why aren't I running 10.x, I will as soon as my 
new server arrives; the current box is going to fail soon (the 
electrolytic capacitors are starting to bulge) so it's not worth the 
hassle.  And anyway, I've screwed up the ports area Yet Again from a 
failure to read simple instructions :-(

-- 
Dave Horsfall DTM (VK2KFU)  "Bliss is a MacBook with a FreeBSD server."
http://www.horsfall.org/spam.html (and check the home page whilst you're there)