add reject from origin domain feature (#375)

Add a new feature to be able to reject email *from* specific domains.

Co-authored-by: Cyril DUPONT <cyd@9bis.com>

pkg/message/manager.go

@@ -19,7 +19,7 @@ import (
 type Manager interface {
 	Deliver(
 		to *policy.Recipient,
-		from string,
+		from *policy.Origin,
 		recipients []*policy.Recipient,
 		prefix string,
 		content []byte,
@@ -43,7 +43,7 @@ type StoreManager struct {
 // Deliver submits a new message to the store.
 func (s *StoreManager) Deliver(
 	to *policy.Recipient,
-	from string,
+	from *policy.Origin,
 	recipients []*policy.Recipient,
 	prefix string,
 	source []byte,
@@ -56,7 +56,8 @@ func (s *StoreManager) Deliver(
 	}
 	fromaddr, err := env.AddressList("From")
 	if err != nil || len(fromaddr) == 0 {
-		fromaddr = []*mail.Address{{Address: from}}
+		fromaddr = make([]*mail.Address, 1)
+		fromaddr[0] = &from.Address
 	}
 	toaddr, err := env.AddressList("To")
 	if err != nil {

pkg/message/manager_test.go

@@ -22,9 +22,10 @@ func TestManagerEmitsMessageStoredEvent(t *testing.T) {
 	listener := extHost.Events.AfterMessageStored.AsyncTestListener("manager", 1)
 
 	// Attempt to deliver a message to generate event.
+	origin, _ := sm.AddrPolicy.ParseOrigin("from@example.com")
 	if _, err := sm.Deliver(
 		&policy.Recipient{},
-		"from@example.com",
+		origin,
 		[]*policy.Recipient{},
 		"prefix",
 		[]byte("From: from@example.com\n\ntest email"),