Yahoo
From dmfswiki
Yahoo's CardDAV servers are currently hardly reachable. So only CalDAV-Sync works reliably.
Setup
CalDAV-Sync
- Server: caldav.calendar.yahoo.com
- SSL: leave ticked, it won't work otherwise
- Username: your Yahoo-ID (i.e. your email address at yahoo)
- Password: your Yahoo-Password
known issues
CalDAV
None so far.
CardDAV
Yahoo seems to have some configuration problem of their reverse proxies. When you try to contact carddav.address.yahoo.com you'll probably (in about 4 of 5 requests) get an error message stating:
Sorry, Proxy Error. The proxy server received an invalid response from an upstream server. The proxy server could not handle the request PROPFIND /dav/. Reason: Could not connect to remote machine: Connection refused
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