test(health): expect unhealthy for SMTP connection failures

internal/health/smtp.go

@@ -45,7 +45,7 @@ func (c *SMTPChecker) Check(ctx context.Context) Result {
 
 	conn, err := net.Dial("tcp", address)
 	if err != nil {
-		result.Status = StatusDegraded
+		result.Status = StatusUnhealthy
 		result.Message = fmt.Sprintf("Failed to connect to SMTP server: %v", err)
 		result.Latency = time.Since(start)
 		return result
@@ -54,7 +54,7 @@ func (c *SMTPChecker) Check(ctx context.Context) Result {
 
 	client, err := smtp.NewClient(conn, c.config.Host)
 	if err != nil {
-		result.Status = StatusDegraded
+		result.Status = StatusUnhealthy
 		result.Message = fmt.Sprintf("Failed to create SMTP client: %v", err)
 		result.Latency = time.Since(start)
 		return result

internal/health/smtp_test.go

@@ -36,8 +36,8 @@ func TestSMTPChecker_Check_InvalidPort(t *testing.T) {
 
 	result := checker.Check(ctx)
 
-	if result.Status != StatusDegraded {
-		t.Errorf("expected degraded status for invalid port, got %s", result.Status)
+	if result.Status != StatusUnhealthy {
+		t.Errorf("expected unhealthy status for invalid port, got %s", result.Status)
 	}
 }
 
@@ -59,8 +59,8 @@ func TestSMTPChecker_Check_ConnectionRefused(t *testing.T) {
 
 	result := checker.Check(ctx)
 
-	if result.Status != StatusDegraded {
-		t.Errorf("expected degraded status for connection refused, got %s", result.Status)
+	if result.Status != StatusUnhealthy {
+		t.Errorf("expected unhealthy status for connection refused, got %s", result.Status)
 	}
 }