Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host penguin.dq.fct.unl.pt.

I'm sorry to have to inform you that the message returned
below could not be delivered to one or more destinations.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the message returned below.

			The Postfix program

<csdcc@csdcc.com>: host pop.csdcc.com[210.198.4.37] said: 550 5.1.1
    <csdcc@csdcc.com>... User unknown (in reply to RCPT TO command)
-------------- parte successiva --------------
Un messaggio incapsulato è stato rimosso...
Da:         tp@picard.linux.it
Oggetto :   csdcc@csdcc.com
Data:       Mon, 30 Apr 2007 10:36:17 +0100
Dimensione: 49270
Url:        http://lists.linux.it/pipermail/tp/attachments/20070502/9b0d7a88/attachment-0001.eml