I noticed that problem when using safe.dnsbl.sorbs.net. I removed it and added 
the following to solve the problem;

 http.dnsbl.sorbs.net - List of Open HTTP Proxy Servers.
  socks.dnsbl.sorbs.net - List of Open SOCKS Proxy Servers.
   misc.dnsbl.sorbs.net - List of open Proxy Servers not listed in
                          the SOCKS or HTTP lists.
   smtp.dnsbl.sorbs.net - List of Open SMTP relay servers.
    web.dnsbl.sorbs.net - List of web (WWW) servers which have spammer
                          abusable vulnerabilities (e.g. FormMail scripts)
                          Note: This zone now includes non-webserver
                          IP addresses that have abusable vulnerabilities.
   spam.dnsbl.sorbs.net - List of hosts that have been noted as sending
                          spam/UCE/UBE to the administrators of SORBS.  This
                          zone also contains net blocks of spam supporting
                          service providers, including those who provide
                          web sites, DNS or drop boxes for a spammer.  Spam
                          supporters are added on a 'third strike and you are
                          out' basis, where the third spam will cause the
                          supporter to be added to the list.
  block.dnsbl.sorbs.net - List of hosts demanding that they never be tested
                          by SORBS.
 zombie.dnsbl.sorbs.net - List of networks hijacked from their original
                          owners, some of which have already used for spamming.
<snip>

I did not use;  dul.dnsbl.sorbs.net - Dynamic IP Address ranges (NOT a Dial Up 
list!)

Best,

James 

----- Original Message -----
From: "Rod Dorman" <r...@polylogics.com>
To: postfix-users@postfix.org
Sent: Thursday, October 7, 2010 9:01:41 AM GMT -08:00 US/Canada Pacific
Subject: sorbs.net issues

Apparently sorbs.net is having issues with accidentally adding loads of
static IP addresses to their dynamic IP's list.

If you use them you might want to stick a "warn_if_reject" in front of
the reference until the matter is resolved.

-- 
r...@polylogics.com     "The avalanche has already started, it is too
Rod Dorman              late for the pebbles to vote." - Ambassador Kosh


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