You need manually specify the absolute URL path to your image, such as http://yourdomain/images/image.jpg, instead of relative path /images/image.jpg.
To do this, you can use CodeMirror editor instead of TinyMCE editor for html body of the article. Or you can try to specify TinyMCE editor option "URLs" to "absolute" value. Then open article for editing and insart images to the article again