Subject: Undelivered Mail Returned to Sender
From: [email-masked] (Mail Delivery System)
To: [email-masked]
Date: Sat, 14 Aug 2010 12:45:09 -0700 (PDT)

This is the mail system at host c2mailgw10.example1.com.

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 mail system

<[email-masked]>: host m2w-in1.example2.com[74.202.142.24] said: 551
    <[email-masked]> is a deactivated mailbox (in reply to RCPT TO
    command)

Subject: foo
From: Fred Bloggs <[email-masked]>
To: John Smith <[email-masked]>
Date: Sat, 14 Aug 2010 20:45:01 +0100

HTML