TXT= "added 2001-04-20; we do not accept mail from china" 86314 seconds 0 ms
NETHERRELAYS LISTED (127.0.0.2) 900 seconds 0 ms
NOMOREFUNN LISTED (127.0.0.2) TXT= "added 2001-04-19; china does not seem to care about spam" 2100 seconds 281 ms
FAIL Open DNS servers ERROR: One or more of your nameservers reports that it is an open DNS server. This usually means that anyone in the world can query it for domains it is not authoritative for (it is possible that the DNS server advertises that it does recursive lookups when it does not, but that shouldn't happen). This can cause an excessive load on your DNS server. Also, it is strongly discouraged to have a DNS server be both authoritative for your domain and be recursive (even if it is not open), due to the potential for cache poisoning (with no recursion, there is no cache, and it is impossible to poison it). Also, the bad guys could use your DNS server as part of an attack, by forging their IP address. Problem record(s) are:
Server 210.72.13.83 reports that it will do recursive lookups. [test] See this page for info on closing open DNS servers.
FAIL Number of nameservers ERROR: You have less than two nameservers. You are required to have at least 2 nameservers per RFC 1035 section 2.2 (RFC2182 section 5 recommends at least 3 nameservers).
FAIL Single Point of Failure ERROR: You have less than 2 nameservers. Therefore, the test for a single point of failure is irrelevant.