I am interested in such a check. I think that a year is too long, 
though. The check should be in terms of days or even hours. A server 
that is a week off is more than likely not a properly configured 
legitimate mail server.

I posted this to the listserv a little less than a month ago, but got no 
replies:
================================

Another lightweight test you might want to consider is scoring a message 
for how much the Date: header deviates from Delivery-date:

I get a lot of spam that is dated a few days/weeks in the future, and 
also a few years in the past. This almost never happens with legitimate 
email. Occasionally, there will be the legitimate automated email from a 
server that is misconfigured and thinks it is 12/31/1969 6:00pm, but 
that is rare.

A difference of more than 24-48 hours is more than likely not a drifting 
clock or misconfigured server, but rather a spam message attempting to 
gain attention by either floating to the top of the email list, or 
forcing a user to hunt through their email to clear the "new mail" flag.

http://www.hoax-slayer.com/future-date-spam.shtml

=================================

Daniel L. Miller wrote:
> Would anyone be interested in a date check?  Something like if a message 
> is dated more than 365 days in the future it should be classified as spam?
>
> I know that most of these type of messages usually get flagged by 
> another test - but this would let us trash that specific group if it was 
> flagged as [DATE], or [FUTURE], or maybe [TIME-TRAVELER].
>
>   

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