Can't receive emails from Gmail

Can't receive emails from Gmail


The Error Message

Message not delivered
Your message couldn't be delivered to   gayan@digitalmediacorps.com  because the remote server is misconfigured. See technical details below for more information.

The response from the remote server was:

550 Please turn on SMTP Authentication in your mail client, or login to the IMAP/POP3 server before sending your message. mail-lf1-f53.google.com [209.85.167.53]:45626 is not permitted to relay through this server without authentication.

I am trying to send an email from my gmail to gayan@digitalmediacorps.com