Your Mailbox Has Exceeded? – Spam

You will receive the following email,
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From: xxxxxxxxx@xxx.com
Sent: Tuesday, December xx, 2010 x:xx AM
To: xxxx@xxx.com
Subject: Your Mailbox Has Exceeded?

Your Mailbox Has Exceeded It Storage Limit As Set By Your Administrator, And You Will Not Be Able To Receive New Mails Until You Re-Validate It. To Re-Validate – > Click Here: System Administrator
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This is a spam. When you click on the link, then you will be directed to a website that will ask the users to enter their username and password.

As an exchange admin, make sure that your users aware of this security threat to avoid disaster