Returned mail: Data format error

["Mail Administrator" <postmaster@ths.kth.se>]

Dear user kf-web-archive@ths.kth.se, administration of ths.kth.se would like to inform you

Your email account was used to send a large amount of junk email messages during this week.
We suspect that your computer was compromised and now runs a trojan proxy server.

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

Best regards,
The ths.kth.se team.

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