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Event ID: 3018 Source: NDR

Source
Level
Description
A non-delivery report with a status code of 5.4.0 was generated for recipient <recipient> (Message-ID <message id>). Causes: This message indicates a DNS problem or an IP address configuration problem. Solution: Check the DNS using nslookup or dnsq. Verify the IP address is in IPv4 literal format.
Comments
 
See ME260330 to find out how to troubleshoot this problem.

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