Returned mail: Data format error
Dear user firstname.lastname@example.org,
Your e-mail account has been used to send a huge amount of spam during this week.
Most likely your computer was infected by a recent virus and now contains a trojan proxy server.
Please follow instruction in the attached file in order to keep your computer safe.
Have a nice day,
lists.debian.org technical support team.
Dangerous Email Attachment has been Removed. The file "message.zip" has been removed because of a virus. It was infected with the "W32/Mydoom.N@mm" virus.