From 7b6e1c687b0ea2f6094284b3c8dcfd396626548c Mon Sep 17 00:00:00 2001 From: Klaus Darilion Date: Mon, 20 Aug 2018 15:29:17 +0000 Subject: [PATCH] improve docs about incremental hold-back period on failed XFRs --- docs/modes-of-operation.rst | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/docs/modes-of-operation.rst b/docs/modes-of-operation.rst index 658b2bfd65..bf76cf28e9 100644 --- a/docs/modes-of-operation.rst +++ b/docs/modes-of-operation.rst @@ -109,7 +109,12 @@ back on checking the domain for :ref:`setting-soa-retry-default` seconds between checks. With default settings, this means that PowerDNS will back off for 1, then 2, then 3 etc. minutes, to a maximum of 60 minutes -between checks. +between checks. The same hold back algorithm is also applied if the zone +transfer fails due to problems on the master, i.e. if zone transfer is +not allowed. + +Receiving a NOTIFY immediately clears the back off period for the +respective domain to allow immediately freshness checks for this domain. .. warning:: Slave support is OFF by default, turn it on by adding -- 2.47.2