HTTPS Post with a flat file

I have a scenario where I am picking up a file from ECC and need to do an HTTPS post to an external web server.

I have created the RFC destination and entered this in the HTTP Destination in the HTTP receiver adapter.  For the Content/type, the default is text/xml.

I want to simply Post the file as is without any conversion.  Do I need to change the Content/type?  The file that I am using is simply a text file with no XML.

Regards,

Jay