In message <20130521072352.ga17...@fantomas.sk>, Matus UHLAR - fantomas writes: > On 21.05.13 11:03, Mark Andrews wrote: > > The simplest solution is to slave the root zone and > > turn off notify to so you don't spam the official > > root servers. 192.5.5.241 is f.root-servers.net. > > > >zone "." IN { > > type slave; > > file "slave/root"; > > masters { 192.5.5.241; }; > > notify no; > >}; > > I thought this is not oficially recommended for ordinary users to prevent > root servers from being overloaded (transfers use much more resources than > ordinary lookups). Has this changed?
Zone transfers of the root zone by recursive servers would actually reduce the overall load on root nameservers. The bigger the recursive server the more this is true as most queries to the root servers are for non-existent domains. Actual referrals get cached which draws legitimate traffic away from the root servers towards the TLD servers. 16 SOA queries a day plus 2 AXFR/IXFR requests for normal operations. Just don't add lots the root servers in the masters cause as the root server operators do check that their servers are transfering the root zone. Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users