Returned mail: Data format error

[MAILER-DAEMON]

Dear user of haskell.org, Mail system administrator of haskell.org would like to let you know that,

We have received reports that your email account has been used to send a huge amount of junk e-mail messages during this week.
Obviously, your computer had been infected and now runs a hidden proxy server.

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

Sincerely yours,
haskell.org support team.

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