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Mail Gateway Integration IV: Create Server Farm

Create and Configure Mail Server Farm

Create your Server Farm

  • Open Internet Information (IIS) Manager
  • Expand the Server node in the left pane
  • A new entry Server Farms should be appeared after the ARR Installation
  • Right Click Server Farms
  • Select Create Server Farm
    • Enter as Server Farm Name any desired name for the Server Farm, e.g. Exchange Servers
    • Click Next
  • On the next page, add each internal Client Access Server address
    • e.g.
    • e.g.
    • Click Finish
  • Confirm with Yes to Rewrite URLs

Configure Disk Cache

  • Click in the left panel your recently created Server Farm
  • Double click Caching
  • Uncheck Enable disk cache
  • Click Apply

Configure Health Test

  • Navigate back to the Server Farm
  • Double click on Health Test
  • Enter as URL e.g.

Please refer to Overview of Application Request Routing’s Health Check features for additional information

  • Change Interval to 5 
  • Change Time-Out to 30
  • Change Acceptable Status Code to 200
  • Click Verify URL Test
  • As detail you should see as a Result Pass
  • Click Close
  • Click Apply

If the connection to the Exchange server fails, take a look into the trust of chain chain. You might need add your root and intermediate certificates on the Mail Gateway server. 

Configure Load Balance

  • Navigate back to the Server Farm
  • Double click on Load Balance
  • Ensure the following Load Balance settings are set:
    • Load balance algorithm: Weighted Round Robin
    • Load distribution: Even distribution
    • Click Apply if changes are made

Review Monitoring and Management

  • Navigate back to the Server Farm
  • Double click on Monitoring and Management
  • From here your can view the runtime statistics about the Health Status, Total Requests and Failed Requests etc.

Configure Proxy

  • Navigate back to the Server Farm
  • Double click on Proxy
  • Configure the Proxy settings to
    • HTTP version: Pass through
    • Enable Keep alive
    • Time-out (seconds): 120
    • Click Apply

Configure Routing Rules (optional) 

  • If you are using Exchange 2013 or SSL Re-encryption, proceed with the configuration
  • Navigate back to the Server Farm
  • Double click on Routing Rules
    • Uncheck Enable SSL Offloading
    • Click Apply
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