I have to call a secure WCF service from java using mutual authentication. Everything works fine except I\'m unable to send messages which are greater than 48680 bytes in size.
Have your tried to look at the actual packets being sent - eg. with tcpdump/Wireshark ( http://www.wireshark.org/ ) ?
I once had problems only on certain platforms reaching a service that was behind a very picky SSL offload engine.