On Tue, 2020-10-20 at 20:38 +0100, Miki wrote:
> Thanks for quick reply, but blacklist what?
> The problem is I do not know this spammy domains.
> I want to give a score when To: field is NOT in anyaddr...@mydomain.com

Not tested, but something like this should work:

header __LOCAL_TO_ME To =~ /\@mydomain/i
header __LOCAL_CC_ME Cc =~ /\@mydomain/i
header __LOCAL_MAILING_LIST1 List-Unsubscribe =~ /[a-z]+/ 
header __LOCAL_MAILING_LIST2 List-ID =~ /[a-z]+/

meta LOCAL_NOT_TO_ME ( ! ( __LOCAL_TO_ME || __LOCAL_CC_ME
 || __LOCAL_MAILING_LIST1 || __LOCAL_MAILING_LIST2 )) 
score LOCAL_NOT_TO_ME ??

You'll want to whitelist authenticated mail from your regular correspondents
though so it doesn't hit normal bcc's.

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