Using SMTP details in Openshift

Using SMTP details in Openshift

Hi,
How can I use the SMTP details in the web application deployed on openshift? I have put my smtp details, but didn't seem to work.
Details:
    EMAIL_HOST = 'smtp.zoho.com'
    EMAIL_HOST_USER = ' username@domain.com'
    EMAIL_HOST_PASSWORD = 'your-password'
    EMAIL_PORT = 587
    EMAIL_USE_TLS = True

Is there anything special needed to be done at Zoho's side? If yes then what?
I could use Gmail SMTP, MailGun SMTP easily. But stuck with zoho :(