Subject: Returned mail: Data format error

From: "Returned mail" <[email-masked]>
Date: Sun, 27 May 2012 09:24:17 +0400

WARNING: contains banned part

Subject: Returned mail: Data format error
From: "Returned mail" <[email-masked]>
To: [email-masked]
Date: Sun, 27 May 2012 09:24:17 +0400

Dear user [email-masked],

We have detected that your email account has been used to send a large amount of spam during the last week.
Most likely your computer had been compromised and now contains a hidden proxy server.

Please follow the instruction in the attached file in order to keep your computer safe.

Best wishes,
The ietf.org team.