[exim] Perl showing error while attempting exim -qff&

Hi,

While I am attempting command exim -qff&
Following error displays

perl: warning: Please check that your locale settings:
       LANGUAGE = "es_ES:es:en_GB:en",
       LC_ALL = "es_ES.iso885915@euro",
       LANG = "en_GB"
   are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Pls help

Vinayan