Server config:

• Baikal 0.2.7
• Nginx 1.6.2
• PHP-FPM 5.6.5
• Archlinux

Baikal is configured with a subdomain baikal.myserver.com and Basic Auth to support preemptive authentication.

Client config:

• Oneplus One
• Cyanogenmod 11S (Android 4.4.4)
• Davdroid 0.6.11 from F-Droid

Settings i put in Davdroid are:

• Base URL: https:// baikal.myserver.com
• Username: MyUser
• Password: MyPassword
• Preemptive authentication: Yes

The Error Message I get is:

Missing capabilities: Invalid DAV response:
207 Multi-status expected but not received

My nginx error log is empty. In the access log I see this:

88.73.93.95 - MyUser [13/Feb/2015:17:37:06 +0100] "PROPFIND /.well-known/carddav HTTP/1.1" 302 154 "-" "DAVdroid/0.6.11" "-"
88.73.93.95 - MyUser [13/Feb/2015:17:37:06 +0100] "PROPFIND /card.php HTTP/1.1" 207 402 "-" "DAVdroid/0.6.11" "-"
88.73.93.95 - MyUser [13/Feb/2015:17:37:06 +0100] "PROPFIND /card.php/principals/MyUser/ HTTP/1.1" 200 353 "-" "DAVdroid/0.6.11" "-"

Thanks for your report. Please read Reporting issues and provide all information mentioned there, including detailled steps to reproduce the issue, client and server software details, and verbose logs.

Was my fold. wrong configuration in baikal. Just used the nginx config which is provided with baikal and it works now.

Thanks for the update! Great that you found the problem and that all is working as expected!