are they from your own domain? As if they are sent to people with your email address?
Heres one i got just 3 seconds ago:
Note: This is an automated message sent from the Canwest Interactive
mail
system.
We rejected an email message because it either contained a virus or
contained a file attachment with a "dangerous" extension.
Unknown infected with HTML/MimeExploit.IFRAME (CA(InoculateIT),CA(Vet))
virus. The file is currently Removed. The message, "Japanese girl VS
playboy", was sent from admin .
Due to a dramatic increase in email viruses, Canwest Interactive now
blocks
email that has attachments with any one of the following file
extensions:
|