Created on 02-12-2009 12:21 PM
Log messages such as:
RblServer::check 20.4.90.202.zen.spamhaus.org error=2 : 'Host name lookup failure'
could mean that the query is being refused because it exceeds pre-defined service limitations by the DNSBL service provider. If you have very high volume of email traffic, consider providing a DNSBL server on your local network by synchronizing the DNSBL database to it. For details, consult your service provider.
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