Client does not support authentication protocol requested by server

To solve this problem just reset the database password
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mysql> SET PASSWORD FOR 'some_user'@'some_host' = OLD_PASSWORD('newpwd');
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Account Creation Status: failed (Please setup a primary/secondary nameserver)

Change the "NS1 ns1.myprivateserver.example" line in /etc/wwwacct.conf to "NS ns1.myprivateserver.example"