What email encryption is actually in use?

[Simon Josefsson]

"Steven M. Bellovin" <smb at research.att.com> writes:

>>While I generally am on board with this, I can see a situation where the
>>encryption overhead [and complexity] may be excessive [underpowered mail
>>servers administered by beginners] compared to the gains. 
>>
>
> The primary use of STARTLS for SMTP is for mail *submission*, not 
> relaying.

While it may was designed for submission, STARTTLS use in relaying
probably transports more mail -- looking at the past month, of the
82000 mail I received close to 11000 was delivered in encrypted
streams.  7% is quite nice...  I wonder how that compares with the use
of OpenPGP or S/MIME in mail.


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