I think I have a mass mailer virus/bot on my system. I know this because I recieve replys to emials I haven't sent.
Typically it will look like this
Your message did not reach some or all of the intended recipients.
Subject: Better sex with organ pills
Sent: 8/27/2010 3:04 PM
The following recipient(s) cannot be reached:
Greg McLandsborough on 8/27/2010 3:03 PM
The e-mail address could not be found. Perhaps the recipient moved to a different e-mail organization, or there was a mistake in the address. Check the address and try again.
< franklin.ultrafast.com.au #5.1.0 SMTP; 554 5.1.0 Sender Denied>
I also occasionally recieve Out of office replys from my contacts in my address book, to whom I have not sent an email.
I have a static Ip and use Exchange for my email system, and have 5 PC running of the Server. I have Trend Micro set up as a virus scanner.
Can anyone give me some advice on how to stop these virus/bots etc