2. On the navigator, expand User Messaging Server.
3. Right-click on usermessagingdriver-email and navigate to Email Driver Properties.
4. For outgoing notifications, enter OutgoingMailServer and OutgoingMailServerPort properties of your SMTP server as well as OutgoingDefaultFromAddress, OutgoingUsername and OutgoingPassword.
5. Click on Apply and restart the SOA managed server.
No matching drivers found for sender address
Solution: Remove the sender address and the default sender address. This will send all the outbound messages regardless of the sender address.