nosoap=true, SOAP sender channel problem

Hi,

We are working on a SOAP sender channel scenario were third party client is sending messages in form of plain XML through SOAP sender channel.

I know the options in SOAP channel check Do Not Use SOAP Envelope option and enter nosoap=true in the URL.

Our problem is we cannot put "&" sign in the SOAP sender channel URL as per client policy.

Can you help me how we can achieve this functionality. 

Thanks

Ahsan