The domain ” is currently unreachable.

Product: Exchange
Event ID: 4003
Source: MSExchangeTransport
Version: 6.5.6940.0
Component: Microsoft Exchange Transport
Message: The domain ‘<name>‘ is currently unreachable.

This event can occur when the named domain is not reachable for a variety of reasons, with the following three being the most common:

  • The DNS server is unable to resolve names.
  • The SMTP Virtual Server or SMTP Connector may be misconfigured.
  • Default Internet Message Format may be set to a specific domain.
User Action
  • Ensure that the DNS server configured for use by the Exchange 2000 Server is able to resolve names correctly.
  • Ensure that the SMTP Virtual Server and/or the SMTP Connector is/are correctly configured.
  • Change Default Internet Message Format so it has an * in the Domain field.


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