29 Aug
2016
29 Aug
'16
8:46 p.m.
We're seeing a huge uptick in reverse dns lookup failures across an app, 99% are all for Cloudflare ip addresses. Instead of seeing a PTR or NXDOMAIN we're getting back SERVFAIL. Does anyone know if this is a standard response from them? Do they not have reverse DNS setup for their networks? Trying to narrow this down to see if it's a result in a change in how our application handles these errors or if there's an issue going on with cloudflare's DNS setup. Thanks! Jeremy