The URL of this post should be in the filename of the file that gets created in my Dropbox.

Even if this works, IFTTT ➡️ Dropbox is a blunt instrument: as far as I know I can’t format the date it puts in the filename (which is currently in the stupidest format possible, i.e. October 27, 2019 at 02/48PM)

Dan J @danj