Called by the HTTP injection API endpoint after generating a message, but prior to injecting it into the queue.
The event handler will be passed a Message object.
The HTTP injector does not add a
Received header, but it will pre-set the
following meta values in the message:
"http_auth"- will hold either the authenticated username or the peer IP address that satisfied the authentication check for the endpoint.
This event is the best place to carry out a number of important policy decisions:
- DKIM signing via message:dkim_sign.
- Assigning the
"queue"meta values via msg:set_meta
You may use kumo.reject to raise an error to prevent this message from being queued for delivery.