Images in Emails , using CID

I found Email with images using CID: codes.

example : cid:image001.png@01CCA61F.1FB8E630

In this case, if I do a cfdump of "cids"

I get the key pair values in a collection (structure).

The image file is transfered (loaded) and I can replace the CID by the image file adress.

The adress is ; src="cid:image001.png@01CCA61F.1FB8E630"

So I can replace the src value by the uploaded adress (with the image name : image001.png)

And sometimes, the CID code is as : cid:part1.00020509.06000501@imagescreations.fr

In that case the image file is not transfered. (not loaded)

How to get the adress of this CID code ?

I am doing a WebMail, abd with that case, I cannot display the image in the body.

the adress is : src="cid:part1.00020509.06000501@imagescreations.fr"

Thanks for any help.

Pierre.