Re: [PATCH] docs: update sendmail docs to use more secure SMTP server for Gmail

>     Earlier recommendation by IETF with RFC 2595 was to deprecate
>     implicit TLS in preference for upgrade an initially unencrypted
>     connection with STARTTLS command.  These days, however, IETF
>     recommends that connections be made using "Implicit TLS", in
>     preference to STARTTLS and the like, completely reversing their
>     earlier position, in RFC8314.
> 
>     Update the GMail example to use the implicit TLS to match the
>     current recommendation at port 465.