Re: underscores in A queries

, this is the world we are living in... Ondrej -- Ondřej Surý (He/Him) ond...@isc.org > On 9. 4. 2021, at 20:28, Kevin K wrote: > > Hi, > > I've been parsing my query logs to watch for unusual/unexpected lookups, and > I notice quite a few A queries with underscores, ofte

Re: underscores in A queries

On 4/9/21, John W. Blue via bind-users wrote: > It would seem that underscores is one of those characters in DNS that leads > a double life. > > RFC’s say that underscores are disallowed for use in hostnames Right. But it's **hostnames** and not everyone enforces that rule :( > but SRV >

RE: underscores in A queries

-users@lists.isc.org Subject: underscores in A queries Hi, I've been parsing my query logs to watch for unusual/unexpected lookups, and I notice quite a few A queries with underscores, often in patterns like _.domainname.com often followed by _.xyz.domainname.com

underscores in A queries

Hi, I've been parsing my query logs to watch for unusual/unexpected lookups, and I notice quite a few A queries with underscores, often in patterns like _.domainname.com often followed by _.xyz.domainname.com or _.domainname.com.mydomain.com Can someone tell me what