On Thu, Feb 17, 2022 at 3:34 AM muhanad <muha...@plciq.com> wrote: > I have a main domain ( aa.example.com) with hunderds of subdomains ( > bb.aa.example.com). I made a wildcard record to forward all subdomains (bb.) > to a list of addresses in round-robin fashion. The problem I am fscing is > the wildcard is forwarding anything towards the the IP ( example , "cc.bb." > which is not a vaild subdomain). How can I limit that so it will only > forwards ( bb.aa.example.com) and drops any invalid subdomains ( > cc.bb.aa.example.com ). > > Note: aa, bb, and cc being any arbitary value.
With a standard BIND zone, you can't. Wildcards match multiple labels. That goes to the earliest days of the DNS, https://www.rfc-editor.org/rfc/rfc1034#section-4.3.3. You'd need a specialized handler to do this. -- tale -- Visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
