Undelivered Mail Returned to Sender

[Mail Delivery System]

This is the Postfix program at host plutao2.fccn.pt.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

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 attached returned message.

			The Postfix program

<ranasta@ualg.pt>: host smtp1.ualg.pt[193.136.224.8] said: 550
    <ranasta@ualg.pt>: Recipient address rejected: User unknown in relay
    recipient table (in reply to RCPT TO command)
-------------- parte successiva --------------
Un messaggio incapsulato è stato rimosso...
Da:         tp@lists.linux.it
Oggetto :   Returned mail: Data format error
Data:       Sun, 2 Sep 2007 18:36:59 -0400
Dimensione: 41233
Url:        http://lists.linux.it/pipermail/tp/attachments/20070902/ab23065b/attachment-0001.eml