diff --git a/src/internal/controller/zitadelcluster_controller.go b/src/internal/controller/zitadelcluster_controller.go
index 1cec4b6..06a1947 100644
--- a/src/internal/controller/zitadelcluster_controller.go
+++ b/src/internal/controller/zitadelcluster_controller.go
@@ -519,9 +519,9 @@ func (r *ZitadelClusterReconciler) reconcileSMTPConfig(ctx context.Context, zita
 		return ctrl.Result{}, fmt.Errorf("Error creating sytem client: %v", err)
 	}
 	defer ztdClient.Connection.Close()
-
+	_, domain, _ := strings.Cut(zitadel.Spec.SMTPConfig.SenderAddress, "@")
 	_, err = ztdClient.AddDomain(ctx, &pb.AddDomainRequest{
-		Domain:     strings.Split(zitadel.Spec.SMTPConfig.SenderAddress, "@")[1],
+		Domain:     domain,
 		InstanceId: zitadel.Status.DefaultInstanceId,
 	})
 	if err != nil {
@@ -536,6 +536,10 @@ func (r *ZitadelClusterReconciler) reconcileSMTPConfig(ctx context.Context, zita
 	}
 	defer adminClient.Connection.Close()
 
+	_, err = adminClient.AddInstanceTrustedDomain(ctx, &adm.AddInstanceTrustedDomainRequest{
+		Domain: domain,
+	})
+
 	resp, err := adminClient.GetEmailProvider(ctx, &adm.GetEmailProviderRequest{})
 	if err != nil {
 		if strings.Contains(err.Error(), "not found") {
diff --git a/src/pkg/builder/deployment_builder.go b/src/pkg/builder/deployment_builder.go
index 8d88a2e..40dc694 100644
--- a/src/pkg/builder/deployment_builder.go
+++ b/src/pkg/builder/deployment_builder.go
@@ -134,10 +134,6 @@ func (b *Builder) buildDepContainers(zitadel *zitadelv1alpha1.ZitadelCluster) *[
 					Name:  "ZITADEL_DATABASE_COCKROACH_USER_SSL_KEY",
 					Value: "/certs/tls.key",
 				},
-				{
-					Name:  "ZITADEL_PROJECTIONS_TRANSACTIONDURATION",
-					Value: "0",
-				},
 			},
 			Ports: []corev1.ContainerPort{
 				{Name: deployment.ZitadelName, ContainerPort: deployment.ZitadelPort},