Mail cannot log into accounts after El Capitan
Mail repeatedly popup asks for both my email account passwords. When i enter them, it says "Unable to verify account name or password"
I have also re-entered the passwords in Mail>Accounts. Same results
But, I can sign into my Network Solutions webhost mail website with both the account names and passwords. Both also work perfectly on my iPhone Mail
So, the problem is clearly with Mail and the updates in El Capitan, since it worked fine for years prior to the update today
MacBook Pro, OS X El Capitan (10.11), 15" Late 2011, 2.3GHz i7, 8GB RAM