limit user mailbox size

To: "For users of Fedora Core releases" <fedora-list@xxxxxxxxxx>
Subject: limit user mailbox size
From: "Marcos-Fedora Brazil" <marcos-fedora@xxxxxxxxxxx>
Date: Sat, 11 Jun 2005 17:57:11 -0300
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How to limit user mailbox size in FC3 using sendmail server?

Thanks

Marcos