Problem connecting to CardDAV server

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Hi, I am having some problems connecting to my CardDAV server hosted on my Synology NAS. Main problem is that I can’t seem to be able to establish a connection with my remote url.

My current setup is:

https://contacts.mydomain.com -> DDNS + Reverse Proxy -> http://myip:8008/addressbooks/users/myuser/

If I try and reach https://contacts.mydomain.com via browser, I am asked username and password, and then I have correct access to my contacts.

If I try and set my CardDAV account with https://contacts.mydomain.com, I receive an error message: Couldn’t find CardDAV service.

The log seems to show a 404 Not Found error page

Any idea how I could fix this?

Hello,

Did you have a look at https://www.davx5.com/tested-with/synology and the video on this page?

yes I have, but I have to find an alternative way to reaching my NAS since I can’t just do https://nas.mydomain.com:8443 as I am using a reverse proxy to make sure my subdomains point to specific ports on the NAS.

My current setup is:

I have a subdomain (contacts.mydomain.com) (443) which points to my DDNS mydomain.ddns.net. The DDNS points to my network, and the 443 reaches my NAS, goes through a reverse proxy and points to a specific port in the NAS (in this case 8008). I need to do this to make sure I have a recognised SSL certificate from my domain.

Again, this setup works (if I open a browser and go to contacts.mydomain.com, it asks me username and password, and I can access the cardDAV (contacts.mydomain.com is sending me to http://192.168.1.200:8008/addressbooks/users/alex/ via reverse proxy).

I understand that DAVx5 wants a diskstation.example.com:8443 type of address, but I can’t just appent the port number to my nas address, as it would not recognize the SSL cert