DNS report for zone “buup.net”
Hostmaster for zone buup.net is: root@ns.vup.co.krIP settings (as seen from ns.vup.co.kr)
error
You have less than 2 nameservers. You need to have at least 2 nameservers!
warn
All of your nameservers resides in the same C-Net, this makes it very likely that they will be affected by the same outages. You should consider getting a secondary nameserver hosted somewhere else.
Mail settings (as seen from ns.vup.co.kr)
warn
You have only 1 mailserver. Consider getting a backup one!
Zone as seen from “ns.vup.co.kr” [114.108.131.91]
info
ns.vup.co.kr is running the latest version of the zone(1997022700).
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 1997-02-27, and has been updated 1 time on that day.
info
This nameserver does not allow zone transfers.
error
Your nameserver supports recursion. This is really bad to have activated on public nameservers since they can then be used for amplification of Denial Of Service attacks! You can find more information about it here: http://www.us-cert.gov/reading_room/DNS-recursion033006.pdf
warn
Your nameserver doesn't respons to queries via TCP.
info
Your nameserver responds authorative for the zone.
info
Your SOA refresh value of 240 minutes is good.
warn
A SOA retry value of 14400 is too infrequent, we propose you set this to a value inbetween 120 and 7200 seconds.
warn
A SOA expiry value of 3600000 is quite high. You should consider lowering this to a value inbetween 2 and 4 weeks. This value defines for how long the zone should be valid when the slaves are unable to reach the master.
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