setting WAp Gprs VODAFONE ITALY MMS & WEB settings configuration

1) Created a new connection with APN = mms.vodafone.it (everything else is default)

2) Created a new set of MMS settings in the MMS application, with:
Gateway = 10.128.224.10
Server = http://mms.vodafone.it/servlets/mms
Port number = 80
Connect via = the above created connection
WAP version = with this I am unsure, I tried both settings, but no joy.

With these settings, the phone tries to send or retrieve MMS's, correctly connecting to the APN and exchanging data. However I always get a vague error message in the end.
Can you let me know what you have done differently?
Thanks.