I setup four email accounts in Live Mail with msn.com being my default.

Each time I review my email I noticed that the email received on my xxxxxx. net account also shows up in the msn.com email account. 

How do I stop the email from my xxxxx.net account from showing up in msn.com account?  No rules or forwarding in effect or at least none that I know about!

I want to maintain four separate accounts.  Worked fine up until I upgraded computer and re-established my accounts in Live Mail