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<div dir="ltr" data-setdir="false">I was looking at our DNS traffic on the syslog boxes and it seemed to be more than I would expect. I bumped up the dns_cache value which definitely helped, and now the vast majority of queries seem to return NXDomain. So my question is, does syslog-ng not have a negative DNS cache? The version that I tested this on was <span>syslog-ng-3.37.1-1.el7 on RHEL7.</span></div></div></body></html>