Package: prosody Version: 0.9.10-1 Severity: grave Prosody needs lua 5.1 it seems, but the latest version of lua-sec does not seem to offer this anymore. Therefore prosody is not able to initialize TLS anymore:
... tls error Unable to initialize TLS: LuaSec (required for encryption) was not found This results in a server that is no longer accessible in a standard encrypted way and thus either makes the service unusable or unsafe. Re-installing lua-sec 0.5 from stable fixes the issue. Michael -- System Information: Debian Release: stretch/sid APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'testing'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.8.0-1-amd64 (SMP w/2 CPU cores) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages prosody depends on: ii adduser 3.115 ii libc6 2.24-5 ii libidn11 1.33-1 ii libssl1.0.2 1.0.2j-1 ii lua-expat [lua5.1-expat] 1.3.0-3 ii lua-filesystem [lua5.1-filesystem] 1.6.3-1 ii lua-sec [lua5.1-sec] 0.5-1 ii lua-socket [lua5.1-socket] 3.0~rc1+git+321c0c9-1 ii lua5.1 5.1.5-8.1+b2 ii ssl-cert 1.0.38 Versions of packages prosody recommends: ii lua-event [lua5.1-event] 0.4.3-2