0 SMTP email troubles 1 Al Brocklehurst posted 8 Years Ago Hi AllThanks for Rock - it looks a great product. I've set up Rock on an AWS instance for evaluation and I've configured the SMTP transport with a hosted email account. When I send a communication within Rock I get the Failed Recipients and note 'Exception: Failure sending mail.' When I look at the Exceptions list I see 'The remote server returned an error: (404) Not Found.'I've also tried with an Office 365 account but no luck - couldn't quite work out the rely issues. Any assistance appreciated