If you received email such as below:
Do not worry. Basically this email was sent by Afteroffice mail system when it found attachment of the email contains computer virus or other form of dangerous files. The email has been saved at a separate location.
The objective of this email reminder is to inform you that you have been kept safe by our system. But in the case you are sure that the email is legitimate, you may ask the system to re-deliver the email to you by clicking on [I want this email] within the email.