Within each event category there are specific types of event, where sinks can be registered.
Protocol Event Sinks:
OnInboundCommand : This event occurs when a protocol command is received by the SMTP service.
OnServerResponse : This event occurs when a SMTP service is going to respond to a previously received command.
OnSessionStart : This event occurs before the "EHLO" protocol command.
OnMessageStart : This event occurs before the "MAIL FROM" protocol command.
OnPerRecipient : This event occurs before the "RCPT TO" protocol command.
OnBeforeData : This event occurs before the "DATA" protocol command.
OnSessionEnd : This event occurs before the "QUIT" protocol command.
Transport Event Sinks:
Store Events : Responsible for providing the underlying storage mechanism for the message.
Store events are fired many times as the message is processed by the SMTP service.
OnTransportSubmission : This event occurs when a message is submitted to the transport core.
OnPreCategorize : This event occurs before the message is sent to the categorizer.
Categorizer Events : Provides categorization information about the message to the Advanced Queue.
OnPostCategorize : This event occurs after the message has been categorized.
OnTransportRouter : These sinks are responsible for determining the message type and its next hop. Also, the router is
is used by the Advanced Queue to determine link state status for various destinations.
MsgTrackLog : A frequently occurring event firing when message-tracking information is being gathered for the message.
DnsResolver : This event occurs when a domain name needs to be translated into an IP address.
MaxMsgSize : This event occurs when a submitted message exceeds the configured maximum message size.
Incorrect use of the e-nspect Event Sink Administration Module can seriously damage you SMTP installation.