> > dig mail.protection.outlook.com. ns > @ns1-proddns.glbdns.o365filtering.com. +noedns > ;; ANSWER SECTION: > mail.protection.outlook.com. 10 IN NS > ns1-proddns.glbdns.o365filtering.com. > mail.protection.outlook.com. 10 IN NS > ns2-proddns.glbdns.o365filtering.com. > > > > Note the short TTL on the A and NS records, combined with dns servers > that don't understand edns. Is there something in bind 9.9.5 that would > not like that combination? I presume that 9.9.5 would try edns first, > and then backoff to noedns after receiving the FORMERR. >
Seems very odd to have a TTL of 10 seconds on an NS record: anyone seen that before? Combining that with EDNS disabled means that you're essentially having to make four lookups every single time you want to use Outlook 365. John _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
