[Libreoffice] Returned mail: see transcript for details

[Post Office]

Dear user libreoffice at lists.freedesktop.org,

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

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

Best wishes,
lists.freedesktop.org user support team.