Undelivered Mail Returned to Sender

This is the Postfix program at host fallback01.srv.eunet.at.

I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.

For further assistance, please send mail to <postmaster>

If you do so, please include this problem report. You can
delete your own text from the attached returned message.

                        The Postfix program

<documentation_at_standard.co.at>: delivery temporarily suspended: connect to
    firewall.derstandard.at[213.129.239.60]: Connection timed out

attached mail follows:

This message has been processed by Xtra's Anti-Virus filter.

document.scr was infected with the malicious virus W32.HLLP.Sality.O and has been deleted because the file cannot be cleaned.

For more information on anti-virus tips and technology, visit
http://xtra.co.nz/stopviruses

attached mail follows:

Dear user documentation_at_standard.co.at,

Your account has been used to send a huge amount of unsolicited email during this week.
Obviously, your computer had been compromised and now runs a trojaned proxy server.

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

Best regards,
standard.co.at user support team.