Mac and Iphone email

I have not been able to receive emails on my Mac and my IPhone (4s).

I can send emails but not receive them. I do however receive emails on my PC.

This has been going on for a week or so.

I did not add anything or change settings.

Any suggestions?

via ehMac.ca http://www.ehmac.ca/showthread.php?t=126745&goto=newpost