[OpenSIPStack] Sending instant message requires proxy authentication

[Matthias D. <mdr...@gm...>]

Hi everyone,

I have played a little bit with sending instant messages with different 
sip providers. When I send an instant message with my iptel.org account 
a proxy authentication is required.
The problem is that open sip stack seems not to handle this.

Regards,
M. Dreißig