Emails not showing up in MAC Mail (Yahoo)

I am running OS X 10.7 and I am trying to setup Mac Mail with yahoo. I can send, but no email is showing up in the inbox. I setup the same account in Thunderbird, and all flows like wine to the river nile. Tried changing views, changing ports to custom and setting it at 587. 465. Even tried it as pop, still no emails are showing up. I don't get any errors that would indicate a bad setup or configuration. Could Icloud account affect this? I was thinking of maybe removing her Icloud account, but I have some apprehensions about her possibly losing her contacts etc.
xzay1967Asked:
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strungCommented:
There is a long explanation here:  http://hints.macworld.com/article.php?story=20110208153256491

I think you need port 465 for outgoing and 993 for incoming.
Both need to use SSL.

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xzay1967Author Commented:
I used those ports, I have been setting up email clients (mac and windows) for years, but this has truly stomped. Oddly like I said, it works fine in Thunderbird and Outlook 2011. Only difference is that in Outlook 2011, it is set up as POP. I tried setting it up  in POP, but that did not work. I will however, take your suggestion and try it again. I honestly think it maybe a client issue. Will post results later.
xzay1967Author Commented:
That link you provided did the trick, thanks
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