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

At 2:34 PM +0000 4/18/06, Mark Delany wrote:
> This is surely an edge case that Knuth warns us about.
+1

The current spec has enough language to handle key rollover 
gracefully. Further, if a sender wants to minimize DNS lookups, the 
DNS TTL is the perfect tool, and is already implemented everywhere.
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