Problems with autoreply when users cc RT

Im using RT3.2.1 and when users cc RT they dont get a autoreply so they
dont know what ticket number they have.
Has anyone had a similar problem, is this solved in more recent versions?
How do I fix it?

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Datorcentralen Luel� tekniska universitet
Name: Nils-Erik Svang�rd e-mail:
Ph: +46-920-49244 URL:
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