All Troubleshooting steps / How To:
o Notes: This means you have multiple email accounts setup in your Outlook profile. The primary account must be the account that matches your Lync/Skype account exactly. So, set your Lync/Skype email account to the primary account in Outlook and restart Outlook.
o File > Account Settings > Account Settings > E-mail Tab > Set Default to proper account.
Issues remain look to escalate ticket.