Help quickly please SPAM "a message you sent has been blocked by bulk spam email

[#1]

I have just had 91 of these - have I got a virus or is that a really stupid question.
I am using av software, firewall etc  and am presently scanning with everything I have.....
What has happened?

[#2]

Can you post the headers please (edit out your email address).

[#3]

Quote

Received: from host240-51-dynamic.117-80-r.retail.telecomitalia.it (localhost [127.0.0.1]) by barracuda.pict.nl (Spam Firewall) with ESMTP id A59862BFE08 for <infonn@paulfagel.nl>; Fri, 11 Apr 2008 10:32:54 +0200 (CEST) Received: from host240-51-dynamic.117-80-r.retail.telecomitalia.it (host240-51-dynamic.117-80-r.retail.telecomitalia.it [80.117.51.240]) by barracuda.pict.nl with ESMTP id 7kUVkcFjDbMhcrmH for <infonn@paulfagel.nl>; Fri, 11 Apr 2008 10:32:54 +0200 (CEST) Message-ID: <000f01c89bae$a425e1e0$f0337550@pc> From: "atila FIlizay" <iisuksal2003@MYPLUSNET.plus.com> To: infonn@paulfagel.nl Subject: iknissah Date: Fri, 11 Apr 2008 10:32:56 +0200 MIME-Version: 1.0 Content-Type: multipart/alternative;         boundary="--------=_NextPart_000_000B_01C89BBF.67AEB1E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.3138 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.3198

I have been into my mail account and disabled "catch all" which has stopped the onslaught.
Am I sending these e-mails?

[#4]

There's nothing there for you to worry about. A spammer is using an fake email address on your domain to send emails to other people. It usually lasts a day or so before they move on to some other victim.

[#5]

Thank you for your time!
I feel much better about it now.
I hate the spammer scum though