Most Public DNS resolvers do not work with spamhaus.org RBL, are there any that do?
OpenDNS resolvers generally make too many queries and do not allow DNSBLS and URIBLS.
OpenDNS has an article that adds further context to this: Does OpenDNS Work with DNSBLS and URIBLS?
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- Your email traffic totals fewer than 100,000 SMTP connections per day
- Your query volumes total fewer than 300,000 queries per day
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