I get the following when i attempt to send an email to my Virtualmin Server
This is the mail system at host ip-10-128-66-129.ap-southeast-1.compute.internal.
I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can delete your own text from the attached returned message.
The mail system
Final-Recipient: rfc822; lyndon.kiora@ip-10-128-66-129 Original-Recipient: rfc822;firstname.lastname@example.org Action: failed Status: 5.4.6 Diagnostic-Code: X-Postfix; mail for ip-10-128-66-129 loops back to myself