You can specify a default site language for your server as follows. The site language will be used to send language-specific versions of messages if no user preferred language is set.
Command Line: Specify a site language as follows:
configutil -o gen.sitelanguage -v value
where value is one of the local supported languages. See Chapter 5 of Sun Java System Directory Server 5 2005Q1 Administration Guide for a list of supported locales and the language value tag.