RE: charter constraints list

[Miles Libbey <mlibbeymail-mailsig@xxxxxxxxx>]

--- Dave Crocker <dcrocker@xxxxxxxxxxxxxxx> wrote:

> As I recall, the yahoo folks have calculated that complete 
> adoption of domainkeys would require that yahoo add about US$ 
> 100K of hardware.
> 
> Given the scale of their operation, this strikes me as a 
> negligible cost.  Presumably this is proportionally 
> representative of the impact on other operations.

As I recall, it was more like $50k, and that assumed that all of our 
email -- both inbound and outbound was signed. Hotmail has publically
indicated that it blocks over 3 Billion messages per day, and yahoo
mail handles mail for a similar size user base -- hopefully that gives
an indication of the scale we are talking about.

Sendmail did a much more valid test in July
http://sendmail.net/dk-milter/benchmark/ 
and determined their DomainKeys implementation would add 8-16% overhead
to MTAs.

miles