Re: [ietf-dkim] Expiration Tag (x=) is required to minimize DNS lookups.

On Tue, Apr 18, 2006 at 06:39:49AM -0400, Hector Santos allegedly wrote:
> Summary:
>
>    x= is needed to offer a major DKIM verifier optimization to
>    address expiring or revoked keys.
This is surely an edge case that Knuth warns us about.


Mark.

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