Try the following if it works:
In Email Router Settings make following changes:
Configuration Profiles tab (Incoming profile) (Advanced tab has default settings):
Location Server: http://mail.companyname.com (OWA)
Configuration Profiles tab (Outgoing profile) (Advanced tab has default settings):
Location Server: exchangeservername
Deployments tab:
MIcrosoft Dynamics CRM server: http://servername:5555/company_name