Ask the Expert

How can I run multiple mail stores and SMTP domains on one Exchange server?

I have been told that I might be able to run two mail stores on a single Exchange server. First, is this correct? Second, could I run mail stores such as "" and "" on the same mail server?

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If you're running Exchange 2000 or Exchange 2003 Enterprise Edition (i.e., not Exchange Server Standard Edition), then you can install multiple Exchange Server stores. Your Exchange Server mail stores themselves have nothing intrinsically configurable to multiple SMTP domains like and

However, you could create Exchange Server recipient policies for each of these SMTP domains. You could set it up so that all mailboxes created on the first Exchange Server mail store are given the SMTP proxy address, and all Exchange Server mailboxes created on the second store receive the SMTP proxy address.

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Related information from

  • Tip: Using multiple mailbox stores effectively
  • FAQ: Exchange Server information store issues
  • Learning Center: Inside the Exchange Server information store
  • Reference Center: Exchange Server information store tips and resources
  • Reference Center: SMTP tips and resources
  • This was first published in April 2007

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