Minimum TTL?

Tony Finch dot at
Thu Feb 8 16:10:04 UTC 2018

Barry Margolin <barmar at> wrote:

> There are some servers that will avoid expiring records if the auth
> servers stop responding, as a fail-safe mechanism.

For instance, BIND 9.12 -

f.anthony.n.finch  <dot at>  -  I xn--zr8h punycode
Irish Sea: Southwest 5 to 7 veering northwest 6 to gale 8, perhaps severe gale
9 later. Slight or moderate, becoming moderate or rough. Rain then wintry
showers. Good, occasionally poor.

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