noips verifiedimportant
No IPs
Destinations that resolved to nothing — the list problem, not ours.
In detail
Counts the DNS failures that are the recipient's fault: the domain does not exist, or it has no address to deliver to. Resolver failures on our side are a different result (dns:invalid, 4.4.3) and should never be counted here — the distinction is the one measured in the delivery states chapter, and it is what keeps a resolver outage from looking like a bad list.