[Exim] ACL check for date?

Hi All,

I'm seeing more and more spam that is forging the date of the email
message.
This way they try and keep the spammail at the top of you inbox.

Well, seeing that I do not have many friends sending email to me from
the future, how can I tell Exim 4.3 to check for a valid/sane date?

Thanks for any reply,
Mark

--

Little something to harras spammers:
spamtrap@???: arnold@??? zebra@???

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