If someone has a contact for a network operations desk for the US Navy (San Diego area preferred), please contact me off-list. One of our netblocks appears to be filtered somewhere inside their network, preventing DNS lookups from completing, thus preventing e-mail from being delivered. Inquiries over the last few weeks have not been responded to.
Thanks,
-- Stephen Fulton
One of our
netblocks appears to be filtered somewhere inside their network,
preventing DNS lookups from completing, thus preventing e-mail from
being delivered.
Am I reading this correctly? You are saying that you
have engineered a single point of failure in your network
and now you are suffering as a result? As the doctor said
to the man who complained that his head hurt whenever he
hit it with a hammer, don't do that!
Every domain should ensure that it is "hosted" on name
servers in several different netblocks which are in
several different ASes, and preferably with some
significant geographical diversity. There are many
ways to do this ranging from renting colo for
a server somewhere http://www.vix.com/personalcolo/
or working out a mutual arrangement with another
ISP http://www.dnsist.net/
--Michael Dillon
Do you mean he only gets to ask for help if BOTH netblocks were to be filtered?
Hello Stephen.
Check http://www.sstar.com/spt_faq.html#navy. It sounds like you might be
having the same problem I didn.
John
John Souvestre - Southern Star - (504) 888-3348 - www.sstar.com
rather is being afflicted by deliberate packet filtering. That is *not* a
SPOF effect.
Sure, multiple diverse nameservers are preferable, but even that will never
prevent blanket blocking from causing filures at some remote site.