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Re: [Endymail] Hashes of key as addresses

Arnt Gulbrandsen <arnt@gulbrandsen.priv.no> Fri, 05 September 2014 21:09 UTC

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Subject: Re: [Endymail] Hashes of key as addresses
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On Friday, September 5, 2014 8:27:12 PM CEST, Steffen Nurpmeso wrote:
> I don't know how many messages are sent over SMTP each day, but it
> would be interesting to know how much energy all those useless
> roundtrip packets consume which are necessary to get upgrade
> a SMTP session via STARTTLS, and how many percent of those
> connections could also instantiate a non-existent SMTPS instead,
> not requiring these upgrades.

Practically zero and who cares.

TLS negotiation doesn't grow more expensive if you send a few bytes of 
cleartext before the client hello.

Arnt

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