How to set self-hosted bitwarden to use TLS for mail

The documentation at Configure Environment Variables | Bitwarden Help Center has the following to say about globalSettings__mail__smtp__ssl:

(Boolean) Whether your SMTP server uses an encryption protocol:
true = SSL
false = TLS

Which is very confusing to me, does setting it to false mean (a) unencrypted, or (b) encryption using TLS?

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I am also having this trouble. I am trying to connect Bitwarden to Microsoft 365 using Authenticated SMTP, but it seems I am unable as Microsoft only accepts encrypted traffic over port 587, and Bitwarden does not seemingly have an option for encrypted TLS traffic.

Hey all, set to ‘false’.