UPDATE: 03/06/2015 09.30 (AEST) - The issue was identified and resolved by our engineers. Cloud email services have been restored.
Cloud Email Delays
The Melbourne IT technical service team would like to advise customers that we are currently experiencing intermittent email delays on our cloud email service for customers sending emails to particular domains, which we are looking into as a priority. Further updates will follow.
Date Start: 02/06/2015 14:00 (AEST) / Current
Service Impact: Customers who have Cloud Email hosting may see intermittent delays with email delivery ranging from a few minutes to a few hours in some instances. This should not affect customers ability to receive emails.