I am currently writing an essay about securing E-Mails. Now I'm at the point where I want to know if it´s possible to force
STARTTLS in connections via
POP3/IMAP from the clients' side. I know I can configure the client so it uses
STARTTLS but I don't know if I can force it.
Background of this idea will be that no downgrade attack will be possible without noticing.
Does anyone know if there is such an implementation in circulation for Outlook (Or other mail agents)?