zen.spamhaus.org
bl.spamcop.net
b.barracudacentral.org
dnsbl.inksystems.com <-- private internal one derived from honeypot email 
address we have.

I have disabled dnsbl.sorbs.net as they are too aggressive for our purposes, 
they block a lot of Gmail et al, which a lot of our customers and vendors use.



> On Jun 14, 2016, at 4:46 AM, Heinrich Boeder <heinr...@heinrichboeder.com> 
> wrote:
> 
> Hi Folks,
> 
> I have been on this list for quiet some time now and the topic "DNSBL" was 
> discussed pretty often, but I was still wondering which DNSBLs you guys use 
> for your mail environment.
> 
> So here are my questions: Which DNSBLs do you use? Which one can you suggest 
> the most?
> 
> Kind Regards,
> 
> - heinrich
> 
> heinr...@heinrichboeder.com -- www.heinrichboeder.com
> key: 0xC15DAD56 -- 363D 5BC3 9C45 9D09 3D78  1C28 DB68 F047 C15D AD56
> 

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