Hello,
By default we would not recommend using Mendix for File Orchestration.
However… of course the first option would be to increase the server memory / heap space but if your file size grows above $x amount, what’s next?
You could try to use Java code to solve your issue.
1. Writing data to filesystem and sending it from there, not loading it into the server memory and heap space
2. Writing the Big file to the filesystem, splitting the file up and sending it back to Mendix so you can send the files in parts to the other side.