dsn

type Action string

type Envelope struct {
	MsgID string
	From  string
	To    string
}

type RecipientInfo struct {
	FinalRecipient string
	RemoteMTA      string

	Action Action
	Status smtp.EnhancedCode

	// DiagnosticCode is the error that will be returned to the sender.
	DiagnosticCode error
}

type ReportingMTAInfo struct {
	ReportingMTA    string
	ReceivedFromMTA string

	// Message sender address, included as 'X-Maddy-Sender: rfc822; ADDR' field.
	XSender string

	// Message identifier, included as 'X-Maddy-MsgId: MSGID' field.
	XMessageID string

	// Time when message was enqueued for delivery by Reporting MTA.
	ArrivalDate time.Time

	// Time when message delivery was attempted last time.
	LastAttemptDate time.Time
}