diff --git a/charts/mailu/README.md b/charts/mailu/README.md
index 442620be..9f4eaf00 100644
--- a/charts/mailu/README.md
+++ b/charts/mailu/README.md
@@ -330,6 +330,7 @@ helm uninstall mailu --namespace=mailu-mailserver
 | `front.externalService.externalTrafficPolicy` | Service externalTrafficPolicy (Cluster or Local)                                      | `Local`         |
 | `front.externalService.externalIPs`           | Service externalIPs                                                                   | `[]`            |
 | `front.externalService.loadBalancerIP`        | Service loadBalancerIP                                                                | `""`            |
+| `front.externalService.loadBalancerSourceRanges`  | Service loadBalancerSourceRanges                                                      | `[]`            |
 | `front.externalService.annotations`           | Service annotations                                                                   | `{}`            |
 | `front.externalService.labels`                | Service labels                                                                        | `{}`            |
 | `front.externalService.ports.pop3`            | Expose POP3 port - 110/tcp                                                            | `false`         |
diff --git a/charts/mailu/templates/front/service-external.yaml b/charts/mailu/templates/front/service-external.yaml
index 344c997c..115521e5 100644
--- a/charts/mailu/templates/front/service-external.yaml
+++ b/charts/mailu/templates/front/service-external.yaml
@@ -27,6 +27,8 @@ spec:
   {{- if .loadBalancerIP }}
   loadBalancerIP: {{ .loadBalancerIP }}
   {{- end }}
+  {{- if .loadBalancerSourceRanges }}
+  loadBalancerSourceRanges: {{ toYaml .loadBalancerSourceRanges | nindent 4 }}
   {{- if .externalIPs }}
   externalIPs:
   {{- toYaml .externalIPs | nindent 4 }}
diff --git a/charts/mailu/values.yaml b/charts/mailu/values.yaml
index ddcdee9f..2cd0c458 100644
--- a/charts/mailu/values.yaml
+++ b/charts/mailu/values.yaml
@@ -745,6 +745,7 @@ front:
     ## Example for LoadBalancer:
     ## type: LoadBalancer
     loadBalancerIP: ""
+    loadBalancerSourceRanges: []
     externalTrafficPolicy: Local
     externalIPs: []
     annotations: {}