I recommend you to enable HTTPS in the application and redirect HTTP to HTTPS.
Client configuration
Thunderbird on Desktop computers (Windows, Mac, Linux)
Install CategoryManager app in Thunderbird –> Add-ons
Download SOGo Connector and manual install from file. Make sure to pick the correct version for Thunderbird.
If the SOGo Connector cannot be installed as an app, download the SOGo Connector with a right-click on the button, then install it from file in Thunderbird.
Open Address Book, then click File –> New –>Remote Address Book. Right click on the new address book, disable periodic sync, and enter the following URL to connect, replace “user” with your user name.:
If you have an existing remote address book, change the URL to sync existing contacts. Right click the remote address book and select Synchronize. If you don't, you must initiate the first sync from your mobile device.
Thunderbird will ask for the access credentials to your DAV server, enter them, and select save to Password Manager. This way, you will not need to enter the credentials repeatedly for Address Book and Calendar sync.
After the first manual sync, change the settings of the Address Book to Periodic sync.
Before you modify anything on your mobile device, you should make a backup of your contacts in case they get deleted in the process. Install app Groups from Qbix and save all Contacts to a single .vcf file. Email the file to yourself, so will have it available on the device should you need it later.
Go to Settings –> Contacts –> Accounts. If your inital sync should copy contacts from the server, then disable any existing contact account setups and let the device delete all contacts, then create a new contact server setup. If your initial sync should copy contacts from the device, then you must modify the existing contact server setup.
Settings for the server setup are as follows:
Server your.domain.tld
Username user
Password *****
Description your server name
Use SSL <enable>
Port 8443
Account URL (filled in automatically)