| Event Type | Description |
| Add-in | Event related to an add-in task. |
| Adminp | Event related to an Administration Process task. |
| Agent | Event related to agents. |
| Client | Event related to the client. |
| Comm/Net | Event related XPC. |
| Compiler | Event related to the compute and compile functions. |
| Database | Event related to databases. |
| Directory (LDAP) | Event related to directory services. |
| Mail | Event related to mail routing. |
| Misc | Miscellaneous messages not in another event category. |
| Monitor | Event related to events generated on the Domino Administrator by Server Monitoring. |
| Network | Event related to the LAN. |
| Replica | Event related to replication. |
| Resource | Event related to system resources. |
| Router | Event related to mail events. |
| Security | Event related to ID files and server and database access. |
| Server | Event related to conditions on a particular server or server connectivity. |
| Statistic | Event related to statistic alarms. |
| Unknown | Event that has an unknown prefix and is not listed in another event category. |
| Update | Event related to indexing. |
| Web (HTTP/HTTPS) | Event related to the HTTP task. |