On 16/06/16 13:01, Tony Finch wrote:
Phil Mayers <p.may...@imperial.ac.uk> wrote:
For what it's worth, I've been aggressively monitoring DNS resolution of
outlook.office365.com from all four of our recursives, both A & AAAA, once a
minute for the past 3 months.
I wonder if you would notice more problems if your query interval is
greater than the TTL. (And if your servers are ever quiet enough!)
The servers are never quiet enough. There is always continuous query
load for that name at <TTL intervals, at least when I checked a month
ago or so.
Add to which the prefetch thing.
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