Yahoo! mail stopped working with Yosemite
Ever since I upgraded from Mavericks to Yosemite my Yahoo mail account via Mac-Mail has failed to work - cannot send/receive anything.
This saga started a couple of weeks ago when I decided to upgrade from Mavericks to Yosemite. Upgrade went smoothly however my Yahoo mail accounts failed to connect. My Gmail, Outlook, and iCloud accounts all work. My Yahoo account works just fine on my iPhone and iPad, and of course via Web (Safari/Firefox). After trolling through the internet on this I found very few clues for Yahoo mail issues directly linked to Yosemite.
I've deleted the accounts and re-added them (several times). There are two ways email accounts can be added - via Internet Accounts from the System Preferences and also from the Mail application itself. From the Mail application you can also verify the detailed settings of each of the mail accounts. I've checked, double-checked and nothing worked. The following are a sample of the errors I've been receiving:
Mail couldn't log in to the Mail server “Unknown”.
Notes couldn't log in to the IMAP server “Unknown”.
Mail couldn't discover the account settings for the Mail server “Unknown”.
Unable to verify account name or password.
Mail can't connect to the Yahoo! account - Enterpassword for xxx.
There was a problem setting up the Mail account - Mail couldn't discover the account settings for the Mail server
I am constantly prompted to enter my password. I've checked my settings over and over - the detailed mail account settings via Mail--> Preferences. MyYahoo Contacts, Calendars, Message and Reminders all appear to connect just fine by Mail never does.
After all of this I decided to perform a clean install of Yosemite - so I did and . . . no change . . . Yahoo! mail problem persists.
Not sure what else to try. I am wide open to any ideas or suggestions
Mac mini (Late 2012), OS X Yosemite (10.10)