Allowed Characters in DNS names in unbound's local data: IDN

Ron Varburg ronvarburg at
Wed Nov 27 07:51:41 UTC 2019

 Does related
to your question? Even if it does, I wonder myself how much it is used.     On Tuesday, November 26, 2019, 3:04:31 PM GMT, Shanmuga Rao via Unbound-users <unbound-users at> wrote:  
We are planning to use unbound to perform DNS overrides for traffic  redirection in certain locations within our org.  I was wondering if there are any restrictions imposed on the DNS Names/CNAMEs we would add in the unbound.conf under local zone and data? 

For example, AD DNS contains a list of characters that are not allowed, list of characters/digits a record should not start with etc. Do the same rule apply to unbound as well or can we go a bit crazy with our naming conventions ?

I apologize in advance If there is already some documentation on this.  Please redirect me to them if available. 

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