ErrorInvalidImpersonatedUser
Description of the error code "ErrorInvalidImpersonatedUser"
Domain: Exchange
Code: ErrorInvalidImpersonatedUser
Type: Configuration error (You are often able to resolve this type of error.)
Description: Invalid impersonated user. The impersonated user must be specified as an SMTP address.
Possible solution: Ensure that the address is written as an email address, for example, account@example.com.