I find it interesting about our emails.Sending and receiving isn't a big deal.
Fascinating how certain emails goes directly to the inbox,some go to the junk/trash folder. I was lead to believe we make the decisions/selections on what to do with our messages.
Example : After registering,a link was sent to my email address to activate my account. I look in the New Mail folder and nothing was there. I did it a few times until my Junk folder was highlighted. There was the link !
Why as in Wyclef ?
Few more hours the link would of been deleted automatically.
I noticed some of my important messages has been in my Junk folder...

It sucks but with all of the spam out there and no organized and widespread way of authenticating legitimate email you'll have false positives. The filters we use seem to be pretty efficient. I rely soley on the servtex spam assassin settings.

You are right about the authentication.