[Rule-Service-Email Method Name] failed:Authorization failed
An error occurred while processing your email Reason: Email service [ServicePackageName][WorkClassGroupName][Rule-Service-Email Method Name] failed:Authorization failed, please contact system administrator. You originally wrote: XXXXXX
Sent an email and got the above error as the reply. Checked all the authentications but not able to find the error. Is anyone got this kind of error? what is the solution for this error.