I'm wondering if the following scenario is indicative of my system being infected by some type of virus or parasite or having some other type of issue of concern.
I sent an e-mail message to a friend through MS Outlook (2010) but included no Cc's or Bc's. A while later I got a message saying:
Delivery Status Notification (Failure)
This is an automatically generated Delivery Status Notification.
Delivery to the following recipients failed.
However, that e-mail address is not the address of my intended recipient and in fact is not in my e-mail address directory and is completely unfamiliar to me. Interestingly, I did a system search for "s.arafat070" and it turned out two results, both of which were also bounce backs but from e-mails I sent almost a year several months ago. Even more curious is that this particular friend was a recipient on both of those messages (one as part of a distribution list iand the other as a single cc).
In case it is helpful, here is the content of the text file attached to the bounce back message:
Arrival-Date: Thu, 24 May 2012 21:08:17 -0700
Diagnostic-Code: smtp;554 delivery error: dd This user doesn't have a yahoo.com account (email@example.com) [-5] - mta1458.mail.mud.yahoo.com
1) Do these circumstances suggest an infection of either my friend's system or mine?
2) Is it possible/likely that messages I'm sending are going to unintended recipients and I just don't know about it because they are not bouncing back?
3) I have Kaspersky anti-virus Version 2011 but at the time I sent this e-mail, it was disabled because it slows down my Dragon NaturallySpeaking (DNS) voice recognition application. Should I not Send/Receive e-mails when it is disabled?
4) What is the best fix if a fix is needed?
My specs FYI:
•Processor: AMD Phenom(tm) II X6 1090T Processor 3.20 GHz
•Memory: 16.0 GB
•Operating System: Windows 7 Ultimate (64-bit)
•Drive C: Crucial 128GB SATA 6.0Gbps/2.5-inch Solid State Drive (CTFDDAC128MAG-1G1)
•Drive D: LG 12x SATA Blu-ray Writer Drive (WH12LS30K)
•Drive E: WD 500GB SATA 6.0Gbps/7200RPM/16MB/3.5-inch Internal HD (WD5000AAKX-001CA0)
•Drive F: Hitachi 1TB SATA 3.0Gbps/7200RPM/32MB/3.5-inch Internal HD (HDS721010CLA332)
•Drive G: Seagate 3TB SATA 6.0Gbps/7200RPM/64MB/3.5-inch Internal HD (ST3000DM001-9YN166)
•Video: ATI Radeon HD 5700 Series
•MS Office 2010