"The iiNet website, iiNet domain email services and the iiNet customer call centre were affected. Customer services were restored early on the morning of December 27. However, iiNet email customers may have experienced some email delays over the following days as the email backlog was cleared." iiNet customers reported as recently as the weekend that email services, in particular, had been slow to recover from the incident. However, its internet and mobile services were not impacted by the issue. iiNet previously had issues with its Perth data centre in 2015 due to heatwave conditions, and in 2018 due to site power loss.