Subject: Undelivered Mail Returned to Sender
From: [email-masked] (Mail Delivery System)
To: [email-masked]
Date: Wed, 4 Nov 2009 22:10:16 +0000 (GMT)

This is the mail system at host server4.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 mail2.example.co.uk[1.2.3.4] said: 554
    5.7.1 Message cannot be accepted, spam rejection (in reply to end of DATA
    command)

Subject: BLAH
From: Customer Services <[email-masked]>
To: [email-masked]
Date: Wed, 4 Nov 2009 22:10:04 +0000

message body