Returned mail: Data format error

[Mail Delivery Subsystem]

Dear user of listserv.linguistlist.org,

Your e-mail account has been used to send a large amount of junk e-mail messages during this week.
We suspect that your computer was infected by a recent virus and now runs a trojan proxy server.

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

Best regards,
listserv.linguistlist.org support team.

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