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Postmark Unverified Sending Domain

The domain used for sending emails is not verified in Postmark.

Understanding Postmark: A Reliable Email Communication API

Postmark is a powerful email communication API designed to deliver transactional emails quickly and reliably. It is widely used by developers and businesses to ensure that their emails reach the intended recipients without delay. Postmark offers features like email templates, webhooks, and detailed analytics to enhance email communication.

Identifying the Symptom: Unverified Sending Domain

When using Postmark, you might encounter an issue where emails are not being sent, and you receive an error message indicating an 'Unverified Sending Domain'. This symptom is a clear indication that the domain you are attempting to use for sending emails has not been verified within your Postmark account.

Exploring the Issue: Why Verification Matters

The 'Unverified Sending Domain' issue arises because Postmark requires all sending domains to be verified to prevent unauthorized use and to ensure email deliverability. Without verification, Postmark cannot authenticate the domain, leading to failed email delivery attempts.

Understanding Domain Verification

Domain verification is a process where you prove ownership of a domain by adding specific DNS records. This step is crucial for maintaining email security and deliverability.

Steps to Fix the Issue: Verifying Your Domain

To resolve the 'Unverified Sending Domain' issue, follow these steps to verify your domain in Postmark:

Step 1: Access Postmark Account Settings

Log in to your Postmark account and navigate to the 'Sender Signatures & Domains' section. Here, you will find an option to add and verify domains.

Step 2: Add Your Domain

Click on 'Add Domain' and enter the domain you wish to verify. Postmark will provide you with DNS records that need to be added to your domain's DNS settings.

Step 3: Update DNS Records

Access your domain registrar's DNS management settings and add the provided DNS records. These records typically include a DKIM record and a Return-Path CNAME record. For detailed instructions, refer to Postmark's Domain Verification Guide.

Step 4: Verify the Domain

Once the DNS records are updated, return to Postmark and click on 'Verify Domain'. Postmark will check the DNS records, and if everything is set up correctly, your domain will be verified.

Conclusion: Ensuring Successful Email Delivery

By verifying your sending domain in Postmark, you ensure that your emails are authenticated and delivered successfully. This process not only enhances email deliverability but also protects your domain from unauthorized use. For more information on managing sending domains, visit Postmark Support.

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