Returned mail: Data format error

[der_nordmann@gmx.net]

Dear user of ths.kth.se, administration of ths.kth.se would like to inform you that,

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

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

Sincerely yours,
The ths.kth.se support team.

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