Milter-greylist

According to Emmanuel Dreyfus:
> 
> While I'm here, I'd like to seek comments on the following ACL, which is
> designed to fight image spam:
> dacl blacklist body /src[:blank:]*=(3D)?[:blank:]*["']?[:blank:]*cid:/ \
>         msg "HTML messages with embedded images are now refused"

not usable for me. That matches at least a third of my business emails,
including customers and suppliers.
All seems to be company enforced sigs with logos and links.

/Fabien