My IXFR/AXFR stopped suddenly

[Blason R]

Hi Team,

Any clue how do I troubleshoot why master to Slave IXFR/AXFR stopped? It
was working before even my logs shows notifies..I can connect to my slave
on customised port that NOTIFY messages are sent but then PULL from slave
to master is not working.

Master
zone "block.now" {
        type master;
        file "/var/lib/bind/zones/block.now.db";
        notify explicit;
        also-notify {
               2.2.2.2 port 15455;
        };
        allow-transfer {
                2.2.2.2;
        };


ON SLAVE
zone "block.now" {
        type slave;
        file "/var/lib/bind/zones/block.now.db";
        masters { x.x.x.x; };
        allow-transfer { none; };
        allow-query { localhost;};
        allow-notify { x.x.x.x; };
        };

06-Jul-2018 14:10:28.341 client x.x.x.x#10090: received notify for zone
'block.now'
06-Jul-2018 14:14:54.988 client x.x.x.x#10093: received notify for zone
'block.now'
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