When installing ISPConfig 3 on Centos 6 64bit, i got this error:

postalias: fatal: open /var/lib/mailman/data/aliases: No such file or directory

Please how to fix it?

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one advice is:
# cp /etc/aliases /var/lib/mailman/data/aliases
# postalias /var/lib/mailman/data/aliases
reboot server