Your email account has stopped sending and receiving.
First step is to give it an hour to correct itself as 90% of issues correct themselves within the first 20mins.
Secondly, please check you can login via your webmail: www.yourdomain.com.au/webmail (for more info please visit our solution article)
If you can no longer access webmail OR reach your own website please follow the instruction on the 'whats my ip address' solution page and submit a ticket to our support area.
Support, we provide free support via email OR priority support for a minium fee. If you require priority support to solve your issue as quickly as possible simply call our Support line: 1300 859 805 alternatively submit a ticket to our support desk using a functional email address.