Outlook - Microsoft Office Pro Plus 2010

Question

Cannot receive email and "bogus" email being sent to my contacts from me....some to my deceased mother-in-law.

Answer 1

If they are not in sent items, I dont believe these emails are actually generated.. Check whether they do realy exist in your sent items
Any one can send any email address by spoofing.. 
If they are not in the sent items, but your contacts still are getting spams , may be someone is spoofing your email address..  using a php form,
these kind of thing can be done (not limited to php, may be almost any language can do it ).. http://www.w3schools.com/php/php_mail.asp But in the event that there is
no proper email authentication, these spoofed emails are ended up in the spam folder at the receiving end.. 
By any chance, can u reach any of your contacts who already received spams from you? and take the email header from that receiver??? 
http://whatismyipaddress.com/find-headers
https://kb.mediatemple.net/questions/893/How+do+I+view+email+headers+for+a+message%3F
And you can trace the email generating source.. 
http://whatismyipaddress.com/trace-email
and get the ip details etc
http://whois.domaintools.com
IF you still suspect your pc is infected use following recommended tools
Use one scanner at a time
Download hitman pro 3.7 shareware and can be activated for 30 days free)and have a full system scan.. http://www.surfright.nl/en 
alternatively you can use hitmanprokickstart usb bootable
http://www.surfright.nl/en/kickstart
And/or
use malwarebyte and have a full system scan http://www.malwarebytes.org/products/malwarebytes_free/
And/or
use Junkware Removal  Tool  and have a full system scan
http://www.bleepingcomputer.com/download/junkware-removal-tool/dl/131/
And/or use TDSS Killer  have a full system scan..: http://www.bleepingcomputer.com/virus-removal/remove-tdss-tdl3-alureon-rootkit-using-tdsskiller
do not open email from unreliable sources like public cafes , and once again change password..
If it is appearing in your sent items, this could be a worm problem... http://answers.stanford.edu/solution/what-are-mass-mailing-worms
What these kind of worms do is,  steal your session (login) data like cookies and send emails through your email accounts..  
http://answers.microsoft.com/en-us/windowslive/forum/email/hacked-hotmail-account-sending-spam-to-contacts/818d1fe7-c496-4d16-bbd6-b2ab430e312a?msgId=2a3784f4-9e39-4a0b-a17b-0680bc815f14
http://answers.microsoft.com/en-us/windowslive/forum/email/my-hotmail-is-sending-spam-to-my-contacts-how-do-i/45614413-d6fd-43a6-8d71-4fc92905caa3?msgId=f5fd6670-78d5-4208-b5a8-495ec00323f4