mount.cifs works with CIFS server's IP address but doesn't work with the hostname.

Solution Unverified - Updated -

Issue

  • mount.cifs works with CIFS server's IP address but fails with CIFS server's hostname.
# mount.cifs -o username=administrator,password=Passw0rd\!,sec=ntlm //cifs-server.example.com/share /cifs
mount error(5): Input/output error
Refer to the mount.cifs(8) manual page (e.g. man mount.cifs)

# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
10.10.10.10 cifs-server cifs-server.example.com

Environment

  • Red Hat Enterprise Linux 7

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