Not all carddav address books are discovered

Description

Mailspring only discovers the main carddav address book, misses all others.

Using mailbox.org with a custom domain. I created _carddavs._tcp.example.com srv DNS entries to davs.mailbox.org

Setup

  • OS and Version: Ubuntu 18.04
  • Mailspring Version: 1.7.6

(Originally posted by Dahaniel on GitHub.)