[NTLUG:Discuss] Mail Question

[Chuck]

I have a desktop running Mandrake 9.0, which I use for general stuff, 
including reading email.  It is always kept up to date, and it is connected 
through a SMC router to a DSL line.  It is on 24/7, and serves my website 
with Apache. My ISP, SBC, uses pop for receiving, stmp for sending.  Kmail is 
my current mail reader.

Lately I have been receiving notices like the following.  

"From: postmaster at srcp.com
To: cfgraf at swbell.net
Date:  Today 04:16:49 am
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
dwards at srcp.com

Encapsulated message
Postcard
From: cfgraf at swbell.net
To: dwards at srcp.com
Date: Today 04:17:05 am
Hello!
Here is the document.
Yours sincerely
postcard0.pif
End of encapsulated message"

I do not know this person, and have never sent anything like this.  One of 
these shows up about daily now in my in-box.  The messages always contain a 
virus.  No sent mail like this shows in my Sent Mail folder.

Am I correct in assuming that my email address is in someone's Outlook address 
book, and a virus is sending out copies of itself using my address as the 
"From" line? Or has my box been hacked, and someone is sending out viri 
through it?  

Thank you for any ideas.

Chuck