I have the Bitnami Drupal AMI that is on the AWS marketplace.
https://aws.amazon.com/marketplace/pp/ref=bill_eml_1?sku=5ysj40wf1vkv5qwu3jszwhefa
when someone attemps to create a new account they get the following error:
Unable to send e-mail. Please contact the site administrator if the problem persists.
appreciate any help.