named service suddenly fails to start

Grant Taylor gtaylor at
Thu Nov 4 20:11:07 UTC 2021

On 11/4/21 1:27 PM, Bruce Johnson via bind-users wrote:
> named-checkconf -z revealed a name had been entered with underscores. 
> The person responsible has been sacked. (not really, merely reminded no 
> underscores are allowed in A records :-)

You might want to apologize to them.

Underscores are legitimate in DNS record owner names, despite the 
disagreement of their use in hostnames.

Underscores are used in _acme-challenge.<domain name>, TLSA records 
_25._tcp._smtp.<domain name>, and DMARC _dmarc.<domain name> to name a 
few legitimate uses.  (from a quick `fgrep dig $HISTFILE | fgrep _`)

Remember, DNS is (a lot more) than /just/ hostnames.

Grant. . . .
unix || die

-------------- next part --------------
A non-text attachment was scrubbed...
Name: smime.p7s
Type: application/pkcs7-signature
Size: 4013 bytes
Desc: S/MIME Cryptographic Signature
URL: <>

More information about the bind-users mailing list