As of 1 March 2018, you will no longer be able to forward mails from your AU mailbox to your private email address. This change is due to requirements in the General Data Protection Regulation.
2018.02.12 | Signe Schou
If you use the mail forwarding function in post.au.dk and have set it up to forward AU mails to your private mails, this function will stop working on 1 March 2018. Instead, you must set up your mail client or mobile phone to retrieve email from your AU mailbox. Guide to setting up mail
Contact your local IT support team if you need help.