Authorization on XI

Hi All

I would like to do the authorization on XI ( means i would like to make sure that its "ABC" only who is sendig me the XML file. I don't want to use BPM in this.

Can I do it with some other way too.

Like, in receiver determination I can give condition based on the content ( for e.g IP address of the sender ) of XML file.

But in actual Sender system is not sending the IP address, either I have to create some web application which will add this ( or any content ) in the XML file.

Pls. provide me some solutions.

Best Regards

Lalit