allerrors verified
All errors — the narrower total
Seven error counters summed — permanent failures only, so it excludes expiries, missing recipients and everything greylisted.
In detail
The vendor's own description lists what it includes, and it is a defensible set: things that failed permanently, whether by the receiver's choice or ours. It is not the complement of allgreylisted, and it is not failures minus the temporary counters — expired and norecipients are in neither, and strange is in nothing. Useful as "permanent failures" if renamed; misleading as "all errors".