Still flogging a dead horse...
On Sun, Aug 04, 2002 at 11:33:32PM +1200, Peter Mott wrote:
But the telecom delegated /23 had no name resolution.
Empty/broken zone, lame delegation or name-servers not responding?
For your original email is sounds very much like the latter, in which
case *most* things will keep working albeit a little more slowly at
times perhaps.
Email won't be lost, it will remain in the queues, web-traffic should
be blisfully ignorant of this.
As much of 25% of the 'NZ in-addr.arpa' space is bogus last time I
checked.
Thousands of web applications on our virtual web servers were
unable to send mail because the in-addr zone ttl expired on our
caching name servers
Your expired in under 30 minutes?
and lookups to auth name servers failed due to loss of parent name
servers
I'm not sure i follow here.
Since our mailers require even our own host ip addresses to
resolve to a useful name things were very sucky for a time.
Eh? Your MTAs fail to stop working when they can't resolve their own
names from address? Sounds pretty nasty to me....
We are making quite a few network changes at this time, so had ttl
lower than usual. Needless to say I've wound it back up again.
Lucky for us, none of our outbound mailers are on the /23
concerned, or other isp mailers would no doubt been refusing mail
from our customers.
I doubt it... so much DNS is busted out there almost body requires
in-addr.apra to be working when receiving email.
Sorry, I just don't understand why this was such a problem... reverse
is broken for so many people and they never notice it.
--cw
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