DNS report for zone “nctucs.net”
Hostmaster for zone nctucs.net is: chwong@nctucs.netIP settings (as seen from zfs.cs.nctu.edu.tw)
error
You have less than 2 nameservers. You need to have at least 2 nameservers!
info
You have nameservers in several C-Nets, that's good!
Mail settings (as seen from zfs.cs.nctu.edu.tw)
warn
You don't have any mailservers set up. This is OK if you don't use any mail for the domain.
Zone as seen from “chbsd2.cs.nctu.edu.tw” [140.113.215.15]
error
Host is down!
Zone as seen from “zfs.cs.nctu.edu.tw” [140.113.17.215]
info
zfs.cs.nctu.edu.tw is running the latest version of the zone(2009060202).
info
SOA serial seems to follow good standards. We recommend it to be in YYYYMMDDxx-format, which yours appear to be. This would suggest that your zone was last updated at 2009-06-02, and has been updated 3 times on that day.
info
This nameserver does not allow zone transfers.
info
This nameserver does not support recursion, which is good. Public nameservers should never support recursion.
info
Your nameserver responds to queries via TCP.
info
Your nameserver responds authorative for the zone.
info
Your SOA refresh value of 5 minutes is good.
info
Your SOA retry value of 5 minutes is good.
warn
A SOA expiry value of 864000 is too low. This value denotes for how long the zone is valid when the master is down. RFC1912 suggests it should be between 2 and 4 weeks.