Hello group, While implementing our own DNSBL, I came across a phenomenon. Right now in testing phase, I found that the dns queries were being cached in postfix itself. I had made some changes in the dns side, and wanted them to be reflected on the mta. I tried flushing the dns cache by restarting the caching nameserver. But, the changes were reflected only after Postfix was restarted. So, just wanted to confirm if there is any caching nameserver inside postfix itself. If so, I'll have to consider it during the setup design.
Cheers!!!