Feature #5663: Return to Icedove
Enigmail is configured to use a cleartext hkp:// keyserver
I didn't test it in Tails itself, but
config/chroot_local-patches/torbirdy-adjust-defaults.diff patches the upstream code to set the keyserver to
hkp://pool.sks-keyservers.net apparently. Why don't we use our default hkps:// keyserver?