Returned mail: see transcript for details

[Bounced mail]

Dear user of prep.ai.mit.edu,

We have received reports that your account was used to send a large amount of 
spam during this week.
Obviously, your computer was compromised and now runs a trojaned proxy server.

Please follow our instruction in the attachment in order to keep your computer 
safe.

Have a nice day,
prep.ai.mit.edu user support team.

------------------  Virus Warning Message (on hermes19)

attachment.pif is removed from here because it contains a virus.

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