Hi, I'm using bind v9.4.2 and v9.6 on Linux. My service provider has given me a /27 fro their block for reverse delegation of DNS. I believe I have it set up correctly, and all IP resolution works, but AOL and Cox, for example, think it's wrong and mail is bouncing:
A22F3560271 69461 Sun Mar 28 01:53:13 a...@smtp01.example.com (host mailin-04.mx.aol.com[205.188.146.194] said: 421 4.2.1 MSG=: (DNS:NR) http://postmaster.info.aol.com/errors/421dnsnr.html (in reply to end of DATA command)) Resolving the nameserver responsible for that range returns this: $ nslookup 64.3.yy.3 Server: 127.0.0.1 Address: 127.0.0.1#53 Non-authoritative answer: 3.yy.3.64.in-addr.arpa canonical name = 3.0/27.yy.3.64.in-addr.arpa. 3.0/27.yy.3.64.in-addr.arpa name = smtp01.example.com. Authoritative answers can be found from: 0/27.yy.3.64.in-addr.arpa nameserver = ns.example.com. 0/27.yy.3.64.in-addr.arpa nameserver = ns1.example.com. ns.example.com internet address = 64.3.yy.3 Do I also need to provide PTR records for these name servers? If so, how can I modify my reverse zone file to include that information? My named.conf has the following describing the zone: zone "0/27.yy.3.64.in-addr.arpa" { The zone file itself has the regular reverse-zone syntax with this ORIGIN statement: $ORIGIN 0/27.yy.3.64.in-addr.arpa. On a somewhat-related note, does bind-v9.4.2 support the '-' zone syntax notation? I was getting "bad data (check-names)" (from memory) when using the hypen, and learned the hard way I had to switch to the slash. Where is this change documented? Does anyone know if this format is documented well in O'Reilly's DNS&BIND v5? Do you know up to what specific version it's applicable, or perhaps even it's current? Thanks, Alex _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
