Yahoo email suddenly stopped allowing Apple Mail access to my email
I use apple mail for my email program and over the last few days the Yahoo email I have through my @sbcglobal.net address cannot download email. the email is now only available if I go directly to the Yahoo site or I can get it on iphone. It worked intermittently on my desk top for a day or so and then completely stopped allowing my mail program access. I have quit and restarted apple mail many times and there is no problem with the password to access.
Any help would be greatly appreciated!