diff --git a/en_US/iredadmin/2-iredadmin-pro.custom.ban.rules.md b/en_US/iredadmin/2-iredadmin-pro.custom.ban.rules.md
index 3a4c85d8..e2da1492 100644
--- a/en_US/iredadmin/2-iredadmin-pro.custom.ban.rules.md
+++ b/en_US/iredadmin/2-iredadmin-pro.custom.ban.rules.md
@@ -21,6 +21,11 @@ iRedMail-1.4.1 ships 4 builtin Amavisd ban rules, they're defined in
 );
 ```
 
+- `ALLOW_MS_OFFICE`: Allow all Microsoft Office documents.
+- `ALLOW_MS_WORD`: Allow Microsoft Word documents (`.doc`, `.docx`).
+- `ALLOW_MS_EXCEL`: Allow Microsoft Excel documents (`.xls`, `.xlsx`).
+- `ALLOW_MS_PPT`: Allow Microsoft PowerPoint documents (`.ppt`, `.pptx`).
+
 ## Add new ban rules
 
 You're free to add new ban rules inside `%banned_rules = ();` parameter.
diff --git a/html/iredadmin-pro.custom.ban.rules.html b/html/iredadmin-pro.custom.ban.rules.html
index 36c04efc..e9bb9c18 100644
--- a/html/iredadmin-pro.custom.ban.rules.html
+++ b/html/iredadmin-pro.custom.ban.rules.html
@@ -47,6 +47,12 @@
 );
 </code></pre>
 
+<ul>
+<li><code>ALLOW_MS_OFFICE</code>: Allow all Microsoft Office documents.</li>
+<li><code>ALLOW_MS_WORD</code>: Allow Microsoft Word documents (<code>.doc</code>, <code>.docx</code>).</li>
+<li><code>ALLOW_MS_EXCEL</code>: Allow Microsoft Excel documents (<code>.xls</code>, <code>.xlsx</code>).</li>
+<li><code>ALLOW_MS_PPT</code>: Allow Microsoft PowerPoint documents (<code>.ppt</code>, <code>.pptx</code>).</li>
+</ul>
 <h2 id="add-new-ban-rules">Add new ban rules</h2>
 <p>You're free to add new ban rules inside <code>%banned_rules = ();</code> parameter.
 For example, let's add new rule <code>BLOCK_COMPRESS</code> to block few compress file