Please follow the below steps, when we try to configure Yahoo email account.

Step 1)  :  We need to Authorized eZee Software and generate password (Authorized password)

Go to the link:     https://login.yahoo.com/account/security?scrumb=vwTq6VkfgB4 

Step 2)   :   Select “AppType = Other” from Dropdown and Generate Authorized Password

Step 3)  :  When click on “Generate” button, Yahoo will generate App Authorized Password, which we need to use in the eZee Email Account configuration (NOT regular password, its a different one).

Step 4)  :  eZee Frontdesk Configuration  >> Advance Settings  >>  Email