Yahoo SOAP Mail service API is returning SOAP Fault code 999
I have an application that was working fine for a year but now all of a sudden while I was debugging the application for some issue and trying to connect to my yahoo email account using soap API repeatedly, it suddenly started giving soap fault 999 for listFolders SOAP method. Is this a case of my access being blocked based on my IP address?
I am using OAuth and Yahoo mail 1.1 soap end point.
Just to retierate, it has been working fine for almost over a year.