Fix secure Icedove autoconfig wizard in Tails

research why the account creation wizard fails on our custom packages built with this patchset (in feature/icedove), in Tails. Lack of MX query support, perhaps? Keeping in mind that the idea of securing that wizard is to stop trusting DNS, if #6070 is needed to fix this problem, then it’s part of this deliverable.

Feature Branch: feature/6154-secure-autoconfig-in-icedove

Parent Task: #6154 (closed)

Related issues

Related to #6070
Related to #6369 (closed)

Original created by @tails on 6158 (Redmine)

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information