| Event Type | Information Generated |
| Addin | Messages related to the add-in task. |
| AdminP | Messages related to the AdminP (Administration Process) task. |
| Agent | Messages related to agents. |
| Client | Messages related to the client. |
| Comm | Messages related to X.PC.
Note: Support for dialup modem (X.PC) connections is available only in releases of Domino® earlier than release 8.5. You may continue to use Domino Administrator 8.5 to configure and maintain modem support, for example using the Comm/Net event in the following table, but only on servers running pre-8.5 releases. |
| Compiler | Messages related to the compute and compile functions. |
| DataBase | Messages related to databases (applications). |
| ErrorCode | Messages related to error message codes. |
| Ftp | Messages related to file transfer. |
| LDAP | Messages related to LDAP directory services. |
| Mail | Messages related to mail routing. |
| Misc | Miscellaneous messages not in another event category. |
| Monitor | Messages related to events generated on the Domino Administrator by Server Monitoring. |
| News | Messages related to newsgroups. |
| Network | Messages related to the LAN. |
| Replica | Messages related to replication, including event handler notifications generated by a database event generator. |
| Resource | Messages related to system resources. |
| Router | Messages related to mail events. |
| Security | Messages related to ID files and server and database access, including event handler notifications generated by a database event generators. |
| Server | Messages related to conditions on a particular server or server connectivity. These messages can include event handler notifications generated by Domino server event generators. |
| Statistic | Messages related to statistic alarms. |
| Unknown | Messages that have an unknown prefix and not listed in another event category. |
| Update | Messages related to indexing. |
| Web | Messages related to the HTTP task. |