Thanks for sending in the photos.
I tested adding the original files as attachments and they were accepted OK. So don't know what caused the server to reject them when you tried.
Please note each photo contained the GPS co-ordinates of your location recorded in the Exif metadata by your iPhone. It might be good idea to turn this feature off if you don't need it for other purposes as it may create a security risk.
The Exif metadata has been removed from the images posted above.