Default email address - Exchange 2010

An issue cropped up that I need your help.  Have Server 2008 Standard with Exchange 2010 plus AD installed.  I have a user whose email address is smith@company.com and his login (user) name is bob.  Here is the issue:  The user is receving and sending email with smith@company.com AND bob@company.com.   As administrator, I did NOT add bob@company.com to his AD SMTP email addresses.  The address with smith@company.com is the "default" email address in Exchange.  
How did the bob@company.com get in the SMTP if I did NOT add it?
I now need to determine, I assume from the "sent" folder, all the mail that was sent under bob@company.com so that I can blast email to them that the correct email address is smith@company.com.   What is the best way to do this?   Your help is most appreciative.  Many thanks in advance for your support.
infosys3Asked:
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Glen KnightCommented:
Is your internal domain name the .com address??

If so, this is how he got bob@
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dmwynneCommented:
Did you check the default email address policies.  In Exchange 2007 its under org config, hub transport, email address policies.
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Glen KnightCommented:
Not sure where the rest of my first post went :(
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amenezes0617Commented:
I would imagine that "smith's" first name is bob?
You should look for an email address policy that says to "stamp" each mailbox with the user's firstname@domain.com and the lastname@domain.com.
Since you already have people who think his email is bob@company.com, you can just change to make smith@company.com the default one and leave bob there so he can continue to receive emails sent to that address.
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martushaProduct managerCommented:
look at Exchange 2010 -> Recipient Configuration -> Find User (Bob) -> Click Properties -> choose E-Mail Addresses tab and you will se what email is defaut and all other emails this user have. Also there you can check smith@company.com as default email.
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infosys3Author Commented:
Thanks for the speedy reply and I am sorry it took so long to get back to your for your points.  Yes, i set the proper email address as the "default" and all is well.  Thanks again.
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