ietf-dkim
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Re: [ietf-dkim] 1193 considered harmful

2006-03-23 09:52:11
Arvel Hathcock wrote:
 > 3) +   can hash a body once for redistribution; a fairly marginal
 >        feature that might help mass mailers, but Moore's law is just
 >        as likely to help, um, more.

For mailing lists which sign their outbound traffic surely this benefit is more than marginal; especially for large lists? I don't have as much knowledge here as Mike and I'm no crypto expert (thank God for OpenSSL BTW) but isn't the hashing part what takes the longest (sorry if I'm wrong on that).

Most mailing lists that I know of produce one copy of the outgoing
mail with a large number of rcpt-to's, so it's not very important
to them. Where it might be useful is for, say, an outbound marketing
campaign where you send the spam^H^H^H^Hmessage to each recepient
individually.

                Mike


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