What would greatly increase the usefulness of this feature is if it was modified slightly into a more robust User-defined blacklist that not only parses the FROM line in the header, but also TO and CC, per the feature request at SMTP Expression Filter for header information.
This would give us an all-encompassing catch, quarentine, and review feature not just based on the sender, but also the recipient.
I think the coding changes to allow this to happen would be minimal, so I'm hoping that it can be considered for V8 inclusion. [:)]
Thanks.