Is your feature request related to a problem? Please describe.
The protocol for port 465 is Submission and not SMTP.

Describe the solution you'd like
Replace smtps with submissions in

and

Make sure it stays backward compatible by supporting smtps until the next major release.

Describe alternatives you've considered
N/A

Additional context
https://datatracker.ietf.org/doc/html/rfc8314#section-7.3