Great find, but I don't think anyone is maintaining QmailAdmin at this point. I was heavily involved with development at one point, but used it for years without changes, and then moved to a managed hosting service with a cPanel interface.
If you come back to autorespond.c, you need to modify send_message(): fprintf(fdm,"Content-Transfer-Encoding:...
I think it will be easier to modify the source to autorespond so it includes a Content-Type:...
I think it will be easier to modify the source to autorespond so it includes a Content-Type:...
It's probably simply a matter of adding an additional header to the email, possibly...
Just edit user.c and recompile. Search for this line and change the '3' to a '1':...
proc: sync proc codebase with https://github.co...
unix: apply unix patch to proc branch [2/2]