Outgoing Messages

When messages are sent by a mail client, imip-agent employs an outgoing message rule in the MTA to provide a handler to inspect any calendar-related content and to update its records.

outgoingOutgoing mailOutgoing routerOutgoing handlerSchedulingFree/busyimip-managerMail clients

The management interface does not use this outgoing message rule because it sends messages from the general calendar address (for example, calendar@example.com), and there is no trivial way of deducing the identity of the real sender. Instead, the manager explicitly sends suitably-modified messages to the address of the user operating the interface to achieve the same effect as the outgoing message rule, as well as to notify any mail clients that would normally be managing calendar events on behalf of the user.

manager_outgoingOutgoing mailPerson routerPerson handlerSchedulingFree/busyimip-managerWeb server(Apache, ...)Web browsers



Effect on Objects

Effect on Free/Busy

Effect on Request Queue


Remove selected attendees or an entire event

Remove record if entire event is cancelled

Remove any queue entry


Add or update object, removing specific recurrences of recurring events

Add record for the event, removing records for specific recurrences of an event



Merge attendee participation information

Update records for the event, preserving specific recurrence records when changing a recurring event

The effect of the outgoing handler is to ensure that the user's free/busy status reflects the consequences of their stated attendance of events, and for the object records to reflect the most recent state of each event.

Other Object Types

Other object types are not handled. Free/busy information, if exchanged, is not obtained by the handler to replace its own records.