Using Outlook for Android in business environments for email and scheduling
There was a silent update of the Outlook Android App and I can now see a "Security type" Dropdown when setting up a server connection.
Just check yourself, if you can now see those options (Starttls, tls, none) for both, imap and smtp.
App Ver. 4.2143.4
UPDATE: Default settings when selecting Security types (TLS, STLS) are fine except that STLS for SMTP should be 587, not 465. The product manager of the app is definitely sleeping and not testing at all or doesn't know.