grammar: oxford comma

[thirdparty/pdns.git] / docs / modes-of-operation.rst

diff --git a/docs/modes-of-operation.rst b/docs/modes-of-operation.rst
index 69b17b6d2a0c860882c756cc87d1f85cfda87dc4..bf76cf28e970bf44bc9448f7210daf0247cbf6e2 100644 (file)
--- 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
@@ -196,6 +201,7 @@ itself as a slave for that zone.
 Before a supermaster notification succeeds, the following conditions
 must be met:
 
+ - :ref:`setting-supermaster` support must be enabled
  - The supermaster must carry a SOA record for the notified domain
  - The supermaster IP must be present in the 'supermaster' table
  - The set of NS records for the domain, as retrieved by the slave from the supermaster, must include the name that goes with the IP address in the supermaster table
@@ -272,7 +278,7 @@ Consider the following simple example:
            if record:qtype() == pdns.HINFO then
               resp = {}
               resp[1] = {
-                qname   = record:qname:toString(),
+                qname   = record:qname():toString(),
                 qtype   = pdns.TXT,
                 ttl     = 99,
                 content = "Hello Ahu!"
@@ -281,7 +287,7 @@ Consider the following simple example:
            end
 
            -- Grab each _tstamp TXT record and add a time stamp
-           if record:qtype() == pdns.TXT and string.starts(record:qname:toString(), "_tstamp.") then
+           if record:qtype() == pdns.TXT and string.starts(record:qname():toString(), "_tstamp.") then
               resp = {}
               resp[1] = {
                 qname   = record:qname():toString(),
@@ -296,7 +302,7 @@ Consider the following simple example:
            if record:qtype() == pdns.A then
               resp = {}
               resp[1] = {
-                qname   = record:qname:toString(),
+                qname   = record:qname():toString(),
                 qtype   = pdns.TXT,
                 ttl     = 99,
                 content = "Hello Ahu, again!"