How to set autoreply to a default mail id

Hi to all,
I want that any mail which comes to RT will go to a default mailid automatically named support. For this i have written already a line in /etc/mail/aliases like :-

helpdesk: “|/opt/rt3/bin/rt-mailgate --queue support --action correspond create --url http://helpdesk.kavach.blr

But mails are not going to my support id. Only requestor is getting a mail.

Bijayant Kumar
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