It's your own e-mail program, not your computer, that diverts them. If you
Yahoo premium service, be on the lookout for MTF messages in your bulk
folder each time
you check mail for a while, then open and click "not spam" for each message.
Since you're on Yahoo.com, which has done the same to me, esp
messages, try writing to Yahoo customer service, but they're notorious for
replying, or asking you to purchase a higher-priced service.
I guess "reports of my Mark Twain Form mail being spam are greatly
exaggerated" is the
smile of the day.