Not receiving emails in my outlook account linked to Zoho

Not receiving emails in my outlook account linked to Zoho

I am not receiving emails to my microsoft outlook account that is linked with zoho account. I am able to send emails from outlook but for some reason am not able to receive. 

I am getting this error:


Task ' terrence@educate.co.zw - Receiving' reported error (0x800CCC92) : 'Your email server rejected your login. Verify your user name and password for this account in Account Settings.  The server responded: -ERR Service Unavailable'