Overview
AUPADS (Australian Privacy and Data Security) DUINV focuses on flagging dynamic IP addresses and unverified email senders. Dynamic IPs are typically assigned to residential broadband users and, per best practices, shouldn't be sending email directly.
How It Works
DUINV analyzes IP allocation patterns and PTR records to determine whether an IP is dynamically assigned. It also checks whether senders pass basic authentication (SPF, DKIM).
How to Get Delisted
If you're running a legitimate mail server on what appears to be a dynamic IP, configure proper PTR records and SPF to improve the situation. AUPADS doesn't have a public self-service removal tool.