We are seeing intermittent but frequent SERVFAIL errors for Microsoft owned
hostnames in MX records. Specifically with *.mail.protection.outlook.com
hostnames. In the BIND logs we see something like this:
28-Apr-2016 13:35:01.139 query-errors: debug 1: client 10.10.10.96#48950
(pitt-edu.mail.protection.outlook.com): query failed (SERVFAIL) for
pitt-edu.mail.protection.outlook.com/IN/A at query.c:7004
That appears to be a fairly generic error in query.c:
/*
* Something has gone wrong.
*/
QUERY_ERROR(DNS_R_SERVFAIL);
goto cleanup;
Is anyone else seeing this? I suspect it has something to do with DNSSEC or
possibly AAAA records, but haven’t proved it yet. Any help would be greatly
appreciated.
Thanks,
Rob Heilman
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