Not able to send messages using Outlook

Not able to send messages using Outlook

Hi,
Can anyone help me! I use zoho mail and microsoft outlook. I can send and receive emails when i use my zoho to email BUT when i use outlook I can only receive emails i cant send any.... error message in outlook says 
"Cannot send mail. The SMTP server does not recognize any of the authentication methods supported by Outlook. Try changing the SMTP authentication options in Account settings or contact your network administrator."

Thanks.