On Wed, 2009-03-11 at 12:17 +0300, Eric Kiara wrote:
> I believe zen.spamhaus.org is free (with limits) something like: 100,000
> smtp connections and 300,000 queries to SpamHaus per day.
This is all clearly defined and has been hashed over on this list (and
others) many times. See this page, which I will cut the relevant details
from:
http://www.spamhaus.org/organization/dnsblusage.html
> Use of the Spamhaus DNSBLs via DNS queries to our public DNSBL servers
> is free of charge if you meet all three of the following criteria:
> 1. Your use of the Spamhaus DNSBLs is non-commercial*, and
> 2. Your email traffic is less than 100,000 SMTP connections per
> day, and
> 3. Your DNSBL query volume is less than 300,000 queries per day.
> *Definition: "non-commercial use" is use for any purpose other than as
> part or all of a product or service that is resold, or for use of
> which a fee is charged. For example, using our DNSBLs in a commercial
> spam filtering appliance that is then sold to others requires a data
> feed, regardless of use volume. The same is true of commercial spam
> filtering software and commercial spam filtering services.
>
> A company that uses our DNSBLs solely to filter their own email
> qualifies as a non-commercial user and may use our free public DNSBLs
> if that company's email volume and DNSBL query volume is below the
> free use limits. The same is true for any non-profit organization,
> school, religious organization, or private individual who operates
> their own mail server.
Pretty unambiguous.
Graeme
