Increase SMTP transaction logging details

tests/src/smtp/queue/manager.rs

@@ -23,6 +23,9 @@ relay = true
 
 #[tokio::test]
 async fn queue_due() {
+        // Enable logging
+        crate::enable_logging();
+
     let local = TestServer::new("smtp_queue_due_test", CONFIG, true).await;
     let core = local.build_smtp();
     let qr = &local.qr;