On Fri, Apr 27, 2012, at 06:09 PM, Dennis Guhl wrote: > The caching is done in your local resolver, not in postfix.
Ok, I can check that and make sure that those results are being returned from my LAN DNS server's cache. Is there any way to prevent Postfix from making those repeated DNS checks, regardless of whether it's externally to Spamhaus' servers, or to a locally cached DNS result? If an IP is identified as 'bad' via a DNSBL check once, that should be sufficient. Any subsequent instances of that IP should also be considered 'bad', if only for some user-defined period of time. -- Thanks, Karen
