| 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. |