Chevron Email Firewall Alert

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Your message with subject Mail System Error - Returned Mail sent on
12/17/06, 07:52:12 contained one or more attachments not allowed by
Chevron and was blocked. If you did not send such an email, your email
address may have been spoofed. In this case, no further action is
required on your part and you may disregard this message. For more
details on spoofing, please visit
http://messaging.chevrontexaco.com/html/spam/spooffaq.asp.