On Tue, 6 Nov 2007, Robert Meissner wrote:

> If i configure my ftpd to allow only tls secured connections, i'm not able
> to connect. The same problem is described in [2].

[...]

> [2] http://curl.haxx.se/mail/lib-2006-02/0027.html

Right, and the solution to [2] was posted as a follow-up and I get a feeling
it may be the fix (or at least work-around) to your problem as well:

http://curl.haxx.se/mail/lib-2006-02/0033.html

As you see, this is a binding problem and not really a libcurl one.

-- 
  Commercial curl and libcurl Technical Support: http://haxx.se/curl.html