The summary of the C-Command forum just ended in my SPAM box, too. 
Luck of the draw, perhaps due to the content of the cited SPAM?
Please check the Log window to see whether SpamSieve is actually the reason the message went to Junk. If so, it will say why it thought the message was spam.
It appears that Yahoo has selected your email address to be this month’s arbitrary spam target. It was the only one in the online spam folder.
I wish they’d fix that. I wish that I’d remembered to check that possibility before sending a sarcastic response here.