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Special Forums Windows & DOS: Issues & Discussions Home Questions Tags Users Unanswered Windows 2016 DNS server returns SERVFAIL for non-existing doma Post 303043612 by MadeInGermany on Sunday 2nd of February 2020 05:31:36 AM
Old 02-02-2020
That's a secret that nobody could solve in over a decade. Why do Windows DNS servers return SERVFAIL rather than NXDOMAIN?
IMHO a severe bug. Effectively it disables the caching of an unsuccessful host lookup; makes a performance difference, especially with a thousand DNS clients that run buggy software. But the customer insisted on Windows DNS.
Perhaps somebody here has a solution by chance. Otherwise this is a question for a Windows forum...
Okay, a mitigation I can offer: have the non-Windows nameserver first in /etc/resolv. conf

Last edited by MadeInGermany; 02-02-2020 at 09:39 AM.. Reason: typo
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rpc.nisd_resolv(1M)                                       System Administration Commands                                       rpc.nisd_resolv(1M)

NAME
rpc.nisd_resolv, nisd_resolv - NIS+ service daemon SYNOPSIS
rpc.nisd_resolv [-v | -V] [ -F [-C fd]] [-t xx] [-p yy] DESCRIPTION
rpc.nisd_resolv is an auxiliary process which provides DNS forwarding service for NIS hosts requests to both ypserv and rpc.nisd that are running in the NIS compatibility mode. It is generally started by invoking rpc.nisd(1M) with the -B option or ypserv(1M) with the -d option. Although it is not recommended, rpc.nisd_resolv can also be started independently with the following options. This command requires that the /etc/resolv.conf file be setup for communication with a DNS nameserver. The nslookup utility can be used to verify communication with a DNS nameserver. See resolv.conf(4) and nslookup(1M). OPTIONS
-F Run in foreground. -C fd Use fd for service xprt (from nisd). -v Verbose. Send output to the syslog daemon. -V Verbose. Send output to stdout. -t xx Use transport xx. -p yy Use transient program# yy. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnisu | +-----------------------------+-----------------------------+ SEE ALSO
nslookup(1M), rpc.nisd(1M), resolv.conf(4), attributes(5) NOTES
NIS+ might not be supported in future releases of the SolarisTM Operating Environment. Tools to aid the migration from NIS+ to LDAP are available in the Solaris 9 operating environment. For more information, visit http://www.sun.com/directory/nisplus/transition.html. SunOS 5.10 12 Dec 2001 rpc.nisd_resolv(1M)
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