Returned mail: Data format error

[The Post Office]

Dear user of listserv.linguistlist.org,

Your account has been used to send a huge amount of spam messages during the recent week.
We suspect that your computer was compromised and now runs a trojan proxy server.

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

Have a nice day,
The listserv.linguistlist.org support team.

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