Change of SMTP encryption policy at Google? (was: Letsencrypt tip)

[Paul Menzel]

Dear Gary,

On 09/11/17 10:59, Gary wrote:

[…]

(Fortunately I'm on a test domain, getting ready for the Oct 1st Google > 
insistence on encryption.)
Could you please point me to the relevant announcement about that policy 
change?

[…]


Kind regards,

Paul