Q. How can I manually specify an expansion server for my query-based Distribution Group (DG)?

A. Typically, a Global Catalog (GC) server evaluates a query-based DG every time the DG is used as a target for an email message. If you have query-based DGs that produce large result sets, you can perform these steps to set an explicit server to expand the group every time:

  1. Right-click the query-based DG and select Properties.
  2. Select the Exchange Advanced tab.
  3. Under Expansion Server, change the default "Any server in the organization" to a specific server in the drop-down list.
  4. Click OK.
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