> When it comes to adding 'as many' country lists as you can, remember that
> each RBL server in your list adds a possible DNS look-up to every SMTP
> connection that your SIMS server sees. At one point I went a little nuts
> with country blacklists. SIMS started filling its available SMTP channels
> with connections that were waiting for RBL look-ups to complete, resulting
> in a noticeable performance hit.

What I did is just set up my own DNSBL that's a number of consolidated
country blacklists, scripted to re-download and recreate the list on a
regular basis. Yesterday's blocking (note that I'm on CGPro, so I also have
content filters and internal blacklist by DNS name available to me):

Messages delivered:          1498
  Sent to bad address:       82
Stopped by blacklists:       16890
  Internal blacklist:        4349
  blacklist.alfordmedia.com: 5884
  cbl.abuseat.org:           6321
  opm.blitzed.org:           22
  sbl.spamhaus.org:          301
  xbl.spamhaus.org:          13
Stopped by content filters:  360
Stopped by spamtraps:        5327
Routed to error:             34
-- 
Dave Pooser
Manager of Information Services
Alford Media  http://www.alfordmedia.com


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