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+[Back to table of contents](../../index.md)
+
+----------
+
+# Configure an Email Server
+
+You can configure Harbor to connect to an email server. The email server is only used to send out responses to users who request to reset their password.  
+
+![Configure email settings](../../img//new_config_email.png)
+
+----------
+
+[Back to table of contents](../../index.md)
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diff --git a/docs/1.10/administration/registry_read_only.md b/docs/1.10/administration/registry_read_only.md
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+[Back to table of contents](../index.md)
+
+----------
+
+# Make the Registry Read Only
+
+You can set Harbor to read-only mode. In read-only mode, Harbor allows `docker pull` but prevents `docker push` and the deletion of repositories and tags.
+
+![Read-only mode](../../img//read_only.png)
+
+If it set to true, deleting repositories, tags and pushing images are not permitted.
+
+![browse project](../../img//read_only_enable.png)
+
+
+```
+$ docker push 10.117.169.182/demo/ubuntu:14.04  
+The push refers to a repository [10.117.169.182/demo/ubuntu]
+0271b8eebde3: Preparing 
+denied: The system is in read only mode. Any modification is prohibited.  
+```
+
+----------
+
+[Back to table of contents](../index.md)
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