Niall,
Thanks very much for linking me to that article. It turns out
extremehosting.ca blocks incoming connections on port 53 which also
originate on 53. I've disabled the outgoing source port restrictions and
all is well again.
Also, securing against a cache poisoning vulnerability is a nice side
effect of this problem/solution.
Thanks again!
Keith
On 22/09/11 02:02 PM, Niall O'Reilly wrote:
On 22/09/11 17:34, Keith Burgoyne wrote:
Here's the named.conf file from my name server.
The meat of your configuration seems to be in the (hidden)
included files.
Forcing the source of your outgoing queries always to be
port 53 is a well-documented bad idea. You might find
https://www.dns-oarc.net/oarc/services/porttest an
interesting read.
Best regards,
Niall O'Reilly
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