Giles Coochey <[email protected]> wrote: > It looks like adobe are entertaining use of a CNAME chain (a CNAME to a CNAME > which points to a CNAME which points to a CNAME which eventually points to an > A record).
No, CNAME chains are OK. The problem is that the wip4.adobe.com name servers incorrectly respond with NXDOMAIN (instead of noerror/nodata) when you ask for RRtypes other than A and AAAA. ; <<>> DiG 9.11.0pre-alpha <<>> mx swupdl.adobe.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 36234 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;swupdl.adobe.com. IN MX ;; ANSWER SECTION: swupdl.adobe.com. 2976 IN CNAME swupdl.wip4.adobe.com. ;; AUTHORITY SECTION: wip4.adobe.com. 30 IN SOA sj1gtm001.adobe.com. hostmaster.sj1gtm001.adobe.com. 1287 10800 3600 604800 60 ;; Query time: 169 msec ;; SERVER: ::1#53(::1) ;; WHEN: Thu Oct 09 14:41:01 BST 2014 ;; MSG SIZE rcvd: 128 Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ Trafalgar: Cyclonic in northwest, otherwise mainly northerly or northwesterly 5 or 6. Slight or moderate. Showers in northwest. Good. _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list [email protected] https://lists.isc.org/mailman/listinfo/bind-users
