On Wed, 30 Mar 2016 18:22:21 -0700 (PDT) John Hardin wrote:
> MIME_NO_TEXT is a *very* simple rule: "has a content-type: > multipart/* header in the main message headers" and "has no > content-type: text/* MIME header anywhere." I've only 3 hits on this in the last 4k spam, but FWIW all of them are due to the CT missing the subtype plain. This is a significant RFC violation; it might be worth creating a separate, general MISSING_SUBTYPE rule and adding it as an exclusion to MIME_NO_TEXT.