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    Server Migration Center:Server migration error message Customer.Client.Network.ResolveHostFailed

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    Server Migration Center:Server migration error message Customer.Client.Network.ResolveHostFailed

    Last Updated:May 31, 2025

    This topic describes the causes and solutions for the "Customer.Client.Network.ResolveHostFailed" error message that occurs during SMC migration tasks.

    Problem description

    During SMC migration, the migration task displays the error message "Customer.Client.Network.ResolveHostFailed".

    Cause

    The source system DNS fails to resolve the domain name.

    Solution

    1. Identify the domain name that failed to resolve in the error message.

      For example, in Could not resolve host: smc.aliyuncs.com, the domain name that failed to resolve is smc.aliyuncs.com.

    2. Verify that the DNS configuration file /etc/resolv.conf in the source system is properly configured.

      For example, if the Alibaba Cloud DNS server is 223.5.5.5, you need to add nameserver 223.5.5.5 to this configuration file.

    3. Examine the firewall, proxy, and other network configurations of the source system to ensure that the source system can properly resolve and access the failed domain name.