| Field | Internal name | Type | Warn | Crit | |
|---|---|---|---|---|---|
| Relay denied | relay | gauge | None | None | |
| RBL blocked | rbl | gauge | None | None | |
| HELO rejected | helo | gauge | None | None | |
| Client rejected | client | gauge | None | None | |
| Sender rejected | sender | gauge | None | None | |
| Recipient unknown | recipient | gauge | None | None | |