Hello,

I signed up for forwarding service today. I added the required MX records to my DNS, and have confirmed they now point to your servers.

However, when I try send a test email from a test service to an address within the forwarded domain, your servers are responding:

530 SMTP authentication is required

I've tried two different email servers sending into your server, both report the same error. Why is this happening please?

I am using this service as an emergency fail over after another provider has messed up, and am desperate to get emails through.

Thanks!

Have you configured the username and password on your outgoing SMTP server. Mine is on a gateway configuration page.
Dynu's mail relay is not open and requires authentication before allowing mail relay.