Subject: Undelivered Mail Returned to Sender
From: [email-masked] (Mail Delivery System)
To: [email-masked]
Date: Sun, 10 Jun 2012 07:22:40 +0100 (BST)

This is the mail system at host admin1.example.co.uk.

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 mailgateway.sample.ac.uk[194.66.96.7]
    said: 550 Message refused by MailMarshal SpamProfiler (in reply to end of
    DATA command)

Subject: foo
From: Fred Bloggs <[email-masked]>
To: John Smith <[email-masked]>
Date: Sun, 10 Jun 2012 07:22:30 +0100

HTML goes here