1. Select the Address book tab.
2. Select the New LDAP directory option under File.
3. Make the entries as shown in the following screenshot:
4. In the options, you still need to activate the search in the new directory:
5. You will find the setting in the „Compose“ tab:
6. Select the DFN PKI LDAP. After clicking OK, the DFN address book setup is complete.
Deutsche Version: DFN-Adressbuch in Thunderbird einbinden