An old spam rule contained in SpamAssassins default installation adds spam points to any messages with the date 2010. Well, now that 2010 has arrived, those penalty points are affecting legitimate email because, well, all email sent today will have a date of 2010 associated with it.
“…Any emails sent as of January 1, 2010 to servers running SpamAssassin before the fix was made available, and to any servers running SpamAssassin that have not implemented the fix, will experience a higher than normal SpamAssassin score. This will effect delivery for messages where the score increase is significant enough to put the email’s score above a filtering threshold
A fix to this issue has been made available, but it may take some time for servers running SpamAssassin to make the necessary updates since administrators are the ones who have to make the fix happen…” continue reading
So if you are noticing a decrease in inbox delivery rates, you might check into this.
