Thank you to everyone who has replied! :)
The thought of installing my own caching nameserver on the VPS and
using that as my local resolver to get around this issue did also cross
my mind, however I am already running the powerdns authoritive server on
there to serve out all my zones. Getting the powerdns recursor to work
on the server would be painful (I guess I could create a jail and run it
in there, or bind it to a sub interface ip so it doesn't clash)....
I am a little pissed at my vps provider for assuming that OpenDNS is an
adequate default for everyone. I have raised a support ticket with them
to see whether they have a local resolver. I can see the company has
COLO at a provider in LA (possibly Quadranet). I am sure there must be a
set of local resolvers for the data centre location that will work (this
is certainly the case for my work, we have colo at Hurricane Electric,
HE have a set of resolvers that one can use there).. I have asked the
provider for these if they don't have their own local one in the US.
I guess the local caching nameserver is one way out of this, an
overkill one, but an option... I was really hoping to avoid it if I can.
What a pain in the butt..
Alex.
On 2013-05-29 12:01, Ted Cooper wrote:
On 29/05/13 11:50, Duane Hill wrote:
Set your FreeBSD to use a local resolver (if you can). Some
ISP/DNS
services will return a resolvable result pointing to a common
place
for addresses that do not resolve or return an NX lookup result.
Look out for VPS providers that block DNS queries that don't go
through
their provided DNS servers. Can be a royal pain when attempting to do
a
dig +trace only to have every part of it blocked.
Also, RBLs like spamhaus.org will block lookups from public
DNS
servers.
Or ISP DNS servers unless they have a deal with the DNS RBL providers
to
locally mirror the zone. That is a fairly rare situation in my
experience.
Basically, your servers should be querying directly, or have a
commercial deal with them.
--
## List details at https://lists.exim.org/mailman/listinfo/exim-users
## Exim details at http://www.exim.org/
## Please use the Wiki with this list - http://wiki.exim.org/
