On 6/16/2016 9:49 AM, Alessio Cecchi wrote:

Il 14/06/2016 13:46, Heinrich Boeder ha scritto:
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?

Hi, we use www.invaluement.com

- ivmSIP to block IPs at SMTP level
- ivmSIP24 and ivmURI in Spamassassin with custom score

Also b.barracudacentral.org is good and with low FP.

Probably zen.spamhaus.org is the best dnsbl but is too expensive for us. Invaluement SIP is almost comparable to Zen as performance but much less expensive.

zen.spamhaus.org works great for us. It is free as long as you are not using it as part of a commercial service and your volume is less than 300,000 queries per day. I have heard that Invaluement works well, but I haven't tried it since there is no free access ($15/month minimum).

I use Zen as a blacklist in my MTA to drop most spam before it hits SA. Then I use the default blacklists (plus Razor and DCC) in SA.

--
Bowie

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