Mandatory parameter. This can be one of the following:connections - to identify the source of reject connections.commands ...

Mandatory parameter. This can be one of the following:connections - to identify the source of reject connections.commands - to identify the source of reject commands.messagesrejected - to identify the source of rejected messages/rejected recipients.messagesdeleted - to identify the source of deleted messages.messagesquarantined - to identify the source of quarantined messages.