<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<span style="color: rgb(50, 49, 48); font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; font-size: 15px; background-color: rgb(255, 255, 255); display: inline !important">Hello List,</span></div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
I'm running a few BIND servers, but lately one of my servers suddenly starts responding to clients with servfail for every request from the clients, and BIND doesn't respond to the rndc or statistics interface anymore. </div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
My logs for client-channel show me this: </div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
25-Apr-2020 21:52:04.501 client @XX XX.37#2921 (<a href="http://google.dk/" target="_blank" rel="noopener noreferrer" style="margin: 0px">google.dk</a>): no more recursive clients (1000/900/1000): quota reached<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
I've removed all the dns traffic from the server, and the quota is still reached after 6+ hours?</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
Do you guys have some clue what all this is about? - Or any suggestions where to look for any further information?</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
I'm running BIND 9.16.1 on CentOS 7:</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
named -V<br>
BIND 9.16.1 (Stable Release) <id:d497c32><br>
running on Linux x86_64 3.10.0-1062.el7.x86_64 #1 SMP Wed Aug 7 18:08:02 UTC 2019<br>
built by make with '--build=x86_64-redhat-linux-gnu' '--host=x86_64-redhat-linux-gnu' '--program-prefix=' '--disable-dependency-tracking' '--prefix=/opt/isc/isc-bind/root/usr' '--exec-prefix=/opt/isc/isc-bind/root/usr' '--bindir=/opt/isc/isc-bind/root/usr/bin'
'--sbindir=/opt/isc/isc-bind/root/usr/sbin' '--sysconfdir=/etc/opt/isc/isc-bind' '--datadir=/opt/isc/isc-bind/root/usr/share' '--includedir=/opt/isc/isc-bind/root/usr/include' '--libdir=/opt/isc/isc-bind/root/usr/lib64' '--libexecdir=/opt/isc/isc-bind/root/usr/libexec'
'--localstatedir=/var/opt/isc/isc-bind' '--sharedstatedir=/var/opt/isc/isc-bind/lib' '--mandir=/opt/isc/isc-bind/root/usr/share/man' '--infodir=/opt/isc/isc-bind/root/usr/share/info' '--disable-static' '--enable-dnstap' '--with-pic' '--with-gssapi' '--with-json-c'
'--with-libtool' '--with-libxml2' '--without-lmdb' '--with-docbook-xsl=/usr/share/sgml/docbook/xsl-stylesheets' '--with-python' 'build_alias=x86_64-redhat-linux-gnu' 'host_alias=x86_64-redhat-linux-gnu' 'CFLAGS=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' 'LDFLAGS= -L/opt/isc/isc-bind/root/usr/lib64' 'PKG_CONFIG_PATH=:/opt/isc/isc-bind/root/usr/lib64/pkgconfig:/opt/isc/isc-bind/root/usr/share/pkgconfig'<br>
compiled by GCC 4.8.5 20150623 (Red Hat 4.8.5-39)<br>
compiled with OpenSSL version: OpenSSL 1.0.2k-fips 26 Jan 2017<br>
linked to OpenSSL version: OpenSSL 1.0.2k-fips 26 Jan 2017<br>
compiled with libxml2 version: 2.9.1<br>
linked to libxml2 version: 20901<br>
compiled with json-c version: 0.11<br>
linked to json-c version: 0.11<br>
compiled with zlib version: 1.2.7<br>
linked to zlib version: 1.2.7<br>
compiled with protobuf-c version: 1.3.2<br>
linked to protobuf-c version: 1.3.2<br>
threads support is enabled</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
<br>
</div>
<div style="margin: 0px; font-size: 15px; font-family: "Segoe UI", "Segoe UI Web (West European)", "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", sans-serif; color: rgb(50, 49, 48); background-color: rgb(255, 255, 255)">
/Søren</div>
</div>
<div></div>
</body>
</html>