"E/A-Error: Cannot verify hostname" Owncloud + Android 5.0

[AutoImport-mbenter]

My Config

https://
liberty42.de/owncloud/remote.php/caldav/

Problem

The error message after pressing the “forward”-Button:
“E/A-Error: Cannot verify hostname: liberty42.de”

Server Specs:

• Own Root Server
• Debian Wheezy
• OwnCloud 7.0
• StartSSL Certificate with RSA4096 and SHA-512 for liberty42.de

Phone Specs

• Nexus 5
• Android 5.0

Background

I considered to switch from CalDAV-Sync and CardDAV-Sync because your app is available via F-Droid and is FLOSS. Two very important arguments to prefer DAVdroid However, I had to switch back to CalDAV-Sync and CardDAV-Sync because DAVdroid is not working for me

[rfc2822]

Please install the certificate as described in the StartSSL manual - the intermediate certificate is missing and the chain thus invalid.

https://www.ssllabs.com/ssltest/analyze.html?d=liberty42.de

[devvv4ever]

Congratulations to fixing it