SpamAssassin Rule: DC_IMAGE_SPAM_HTML
Standard description: Possible Image-only spam
The mail has at least one large image attachment and a comparatively small amount of text.
The default scores for this rule can be found in the online list of tests.
Although the rule name contains "HTML", this rule, as well as DC_IMAGE_SPAM_TEXT may also trigger on a plain-text mail with a large image attached. (See: __DC_IMG_HTML_RATIO )