I am unable to send email from my Amazon EC2 instance through the Amazon Simple Email Service (Amazon SES) SMTP interface. I receive an error message that says my account's daily message quota has been exceeded.

In order to maintain the quality of Amazon EC2 addresses for sending email, Amazon Web Services enforces default limits on the amount of email that can be sent from an account. You can request an increase to the default limits by completing this form: Request to Remove Email Sending Limitations.

To help ensure that email sent from your EC2 instance is not flagged as SPAM, follow these steps:

  1. Consider provisioning one or more Elastic IP addresses (EIPs) and provide these addresses in the request form. Amazon Web Services works with ISPs and anti-SPAM organizations to reduce the chance that e-mail sent from these addresses will be flagged as SPAM.
  2. Assign a static reverse DNS record to the EIP(s) used to send email. This will help avoid having email that is sent from your EIP(s) being flagged as SPAM by some anti-SPAM organizations. Optionally, provide AWS with a reverse DNS record to associate with your EIP(s). Note that a corresponding forward DNS record (A record) pointing to your EIP(s) must exist before AWS can create a reverse DNS record. Also note that it may take up to a week for anti-SPAM organizations to unblock your EIP(s).

AWS, Amazon EC2, SES sending limits, SMTP limits, port 25

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