Jeff Jansen <[email protected]> writes:

> Does anyone know why "smtp.gmail.com" advertises STARTTLS, but the
> gmail MX servers do not?

Probably because, traditionally, encryption for email at the transport
stage (as opposed to PGP and so forth, which handle encryption from
the MUA and require the user to have a personal key pair) has mostly
been used between the client and the client's own mail server(s),
primarily for the purpose of protecting the user's authentication
credentials.

Between the sending mail server and the receiving mail server, almost
all email is traditionally sent in the clear, ever since the ancient
days of yore when everybody ran open relays.

This may gradually change over time, but my guess would be that Google
just hasn't pulled the trigger on that yet.  They sure wouldn't be the
only ones.  No encryption when sending from one MTA to another is
still pretty much the de facto standard state of affairs at this
point, unless I missed a pretty big news story.

-- 
Nathan Eady
Galion Public Library

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