Incoming/Outgoing Mail delivers to multiple locations

The Exchange 2013 server, whose mailboxes were migrated from Exchange 2007, is forwarding all mail to both the recipients box and another mailbox.  All users mail ends up in that same box.  It modifies the subject and adds 

 on behalf of   To the subject line.  How do I determine what is happening and how I can stop it?  I have a message track results that shows what is happening but I dont know where to stop it. 

Here is what happens to a single message.  The invalid mailbox that gets all of the mail is the Techsupport box.

Here are the results of a message trace for a single message.  I hope that it helps.  You'll notice that the message has a redirect to the Techsupport mailbox.  Is this old remnants from Exchange servers past?  These mailboxes have forwarded from Exchange 2007 and before, as far back as the late 1990's, just like the AD.  Is there a chance that alot of this is old stuff that needs to be found and cleared out?  If so how?

EventId        : AGENTINFO
Source         : AGENT
Sender         : e***@mail.n***.***.com
Recipients     : {ck***@co****.com, cg***@co****.com, d3****@pop.*******.com, ck****@d3.*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : TRANSFER
Source         : ROUTING
Sender         : e***@mail.n***.***.com
Recipients     : {ck***@co****.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : TRANSFER
Source         : ROUTING
Sender         : e***@mail.n***.***.com
Recipients     : {ck****@d3.*******.com, d3****@pop.*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : REDIRECT
Source         : ROUTING
Sender         : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@co*******.com
Recipients     : {TechSupport@co*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : REDIRECT
Source         : ROUTING
Sender         : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@co*******.com
Recipients     : {TechSupport@co*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : AGENTINFO
Source         : AGENT
Sender         : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@co*******.com
Recipients     : {TechSupport@co*******.com, Support_Readers@co*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : TRANSFER
Source         : ROUTING
Sender         : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@co*******.com
Recipients     : {TechSupport@co*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : SEND
Source         : SMTP
Sender         : e***@mail.n***.***.com
Recipients     : {ck***@co****.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : SEND
Source         : SMTP
Sender         : MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@co*******.com
Recipients     : {TechSupport@co*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : SEND
Source         : SMTP
Sender         : e***@mail.n***.***.com
Recipients     : {d3****@pop.*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!

EventId        : SEND
Source         : SMTP
Sender         : e***@mail.n***.***.com
Recipients     : {ck****@d3.*******.com}
MessageSubject : SAVE More When You Refinance Your Auto Loan!