My b2evolution Version: Not Entered

Hi b2evo users
I installed b2evo 3.3.3 and tried remote posting using posterous to my domain; When inserting username and password into posterous then it is trying to link in but after some time there comes the connection error from posterous.

1) What do I have to adapt to use remote posting via xmlrps/metaweblog api
2) What changes in global settings / blog settings I have to do ?

I thank in advance for your assistance

best regards

Peter