Thunderbird continues to mark legitimate email as junk even after I go through all emails in Inbox and mark either as junk or not junk. I have done this countless times. Have entered all legitimate email addresses in address book as was suggested and marked that those in address book are OK. Go back and change all junk marked email as OK, then run junk filter. Again, goes back to incorrectly marking. No idea what to do next. Have tried everything I could find. No soap.