On Wed 20/Aug/2025 23:54:03 +0200 Mark Delany via mailop wrote:
On 20Aug25, Wes Hardaker via mailop apparently wrote:
> their short (300) TTLs have no connection to their deliverability issues.
My associates (and I) have produced a number of academic papers on the
subject that show the benefits of a longer TTL value:
https://ant.isi.edu/%7ejohnh/PAPERS/Moura18b.pdf
https://ant.isi.edu/~johnh/PAPERS/Moura19b.pdf
https://datatracker.ietf.org/doc/rfc9199/
I only skimmed, but do these papers directly address the question of email
deliveribilty
and short TTLs?
A recent post relating TTL and SPF failure is Steve's
https://www.wordtothewise.com/2025/07/dont-make-your-dns-ttls-too-short/
Best
Ale
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