How to create a permanent redirect for MailEnable WebMail from HTTP to HTTPS?

Question

How to create a permanent redirect for MailEnable WebMail from HTTP to HTTPS?

Answer

Note: implement this method for domains where it is required to use HTTPS connection to MailEnable by default.

1. Connect to the server via RDP.

2. Go to Start > Windows System > Administrative Tools > Internet Information Services (IIS) Manager > Server_name > Sites > MailEnable WebMail.

3. Press Bindings > Add button on the right side of the panel.

4. Add the following records for the domain which will be using HTTPS connection by default to MailEnable (change the example.com to the correct one):

   • Type: http
   • IP address: All Unassigned
   • Port: 80
   • Hostname: webmail.example.com

   Press the OK and then Close buttons.

5. Press the Explore button in the Actions section:

   

6. Make a backup for the web.config file.

7. Open the web.config file in any text editor and paste the following code right after <system.webServer> (change the example.com to the correct one in the code below):

   CONFIG_TEXT: <system.webServer>
   <rewrite>
   <rules>
   <rule name="Redirect to HTTPS" enabled="true" stopProcessing="true">
   <match url="(.*)" />
   <conditions>
   <add input="{HTTPS}" pattern="off" />
   <add input="{HTTP_HOST}" pattern="(webmail)\.example\.com" />
   </conditions>
   <action type="Redirect" url="https://{C:0}/{R:0}" redirectType="Permanent"/>
   </rule>
   </rules>
   </rewrite>

8. Back to Internet Information Services (IIS) Manager, navigate to Sites > MailEnable WebMail site and press the Restart button.