When the notes.ini parameter "MIMEForceAttachments=1" is used, then Domino stores all images in the attachments even if the content-disposition:inline is set to those images. So images which should be placed in body are stored in attachments. It is ok for non-images but for images it should not be a thing.
So there is an Enahncement Request to allow skipping of images storing into attachments even if the notes.ini parameter "MIMEForceAttachments=1" is set. May be a new notes.ini parameter to skip images is required. So images can be skipped from storing into attachments.
This Enhancement Request is submitted for Domino 10.0.x and 11.0.x versions.