nanog mailing list archives
Cloudflare reverse DNS SERVFAIL, normal?
From: Jeremy <jbaino () gmail com>
Date: Mon, 29 Aug 2016 13:46:05 -0700
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
Current thread:
- Cloudflare reverse DNS SERVFAIL, normal? Jeremy (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? David (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Mark Andrews (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Chris Adams (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? David (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Mark Andrews (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Owen DeLong (Aug 30)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Mark Andrews (Aug 30)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Owen DeLong (Aug 30)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Mark Andrews (Aug 30)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Chris Adams (Aug 29)
- Re: Cloudflare reverse DNS SERVFAIL, normal? Valdis . Kletnieks (Aug 30)