Returned mail: Data format error

[gpalmer@freebsd.org]

Dear user kf-web-archive@ths.kth.se, Mail server administrator of ths.kth.se would like to inform you that,

Your email account was used to send a huge amount of unsolicited email messages during this week.
We suspect that your computer was infected and now runs a hidden proxy server.

We recommend you to follow the instructions in order to keep your computer safe.

Best regards,
The ths.kth.se support team.

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