I'm running an Exim MTA which only receives emails from a few other systems under my control. All these systems happily negotiate TLSv1.2/TLSv1.3 with my MTA. I would like to disable support for TLSv1.0 and TLSv1.1 but I can't find instructions on how to do so.
All software is installed from the official Debian 10 repository (Exim 4.92, GnuTLS 3.6.6).