Don't send to Gmail over IPv6

Re:Don't send to Gmail over IPv6 by u801e on Friday June 03, 2022 @12:26PM (#31610474)

Shouldn't the authority (or key) used to sign those certs be long lived? The certificates themselves should be rotated frequently, bit not the key used to sign them.

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Re:Don't send to Gmail over IPv6 by Avamander on Friday June 03, 2022 @01:12PM (#31610997)

There's only S/MIME, TLS and BIMI+VMC that use actual certificates.

DKIM does not and DKIM keys should be rotated once in a while, but few do.

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