[Mimedefang] action_bounce html mail

[tonj]

> However, I use a custom header rule in sendmail, not MD, to reject such.

sounds good, would you kind enough to share it? I use sendmail too.

> I also have in the ruleset the ability to check the sender against my
> "access" database and whitelist certain HTML senders if I choose.

I also had whitelisting in mind so I only get html from who I want. Every 
spam that slips through into my inbox contains html.