Using Simple Email Service via SMTP

Question

I need to send email from my EC2 Instance but External SMTP Connection is locked by AWS. For this reason I'm studing AWS Simple Email Service. I'd like integrate this service using SMTP, not REST API. I tried to send a test email using my email account as destination but I receive an error. I'm usind PHP SDK. `2024-02-29 14:42:49 SMTP INBOUND: "554 Message rejected: Email address is not verified. The following identities failed the check in region US-EAST-1: mydestination@gmail.com, MGDLab SES Test , mysender@mydomain.it" 2024-02-29 14:42:49 SERVER -> CLIENT: 554 Message rejected: Email address is not verified. The following identities failed the check in region US-EAST-1: mydestination@gmail.com, MGDLab SES Test , mysender@mydomain.it 2024-02-29 14:42:49 SMTP ERROR: DATA END command failed: 554 Message rejected: Email address is not verified. The following identities failed the check in region US-EAST-1: mydestination@gmail.com, MGDLab SES Test , info@mgdlab.it 2024-02-29 14:42:49 SMTP Error: data not accepted. An error occurred. SMTP Error: data not accepted.
` In my business logic I don't know all destinations. I can't register them. Please help me to understand

David · Accepted Answer

> I need to send email from my EC2 Instance but External SMTP Connection is locked by AWS.

You can unblock this port using this form.
https://aws-portal.amazon.com/gp/aws/html-forms-controller/contactus/ec2-email-limit-rdns-request

Osvaldo Marte · Answer

The error message you're receiving indicates that the email addresses you're trying to send to are not verified. In AWS SES, there are two types of environments: Sandbox and Production.

1. **Sandbox Environment**: When your SES account is in the sandbox, you can only send emails to verified email addresses or domains. This is likely the reason you're encountering the error.

2. **Production Environment**: To send emails to any address, you need to move your SES account out of the sandbox and into production. This requires submitting a request to AWS to increase your sending limits and remove the sandbox restrictions.

Since you mentioned that you can't know all destinations in advance, you'll need to move your SES account to the production environment. You can do this by following these steps:

1. Sign in to the AWS Management Console and open the Amazon SES console.
2. In the navigation pane, under **Account Dashboard**, choose **Sending Statistics**.
3. Choose **Edit your account details**.
4. Under **Request production access**, choose **Request a Sending Limit Increase**.
5. Fill out the form, providing details about your use case, and submit the request.

Once AWS approves your request, you'll be able to send emails to any address without needing to verify each one.

Using Simple Email Service via SMTP

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