13 Steps to Configure Microsoft 365 SMTP Basic Authentication

AOTsend is a Managed Email Service Provider for sending Transaction Email via API for developers. 99% Delivery, 98% Inbox rate. $0.28 per 1000 emails. Start for free. Pay as you go. Check Top 10 Advantages of Managed Email API

When it comes to setting up Microsoft 365 SMTP with basic authentication, there are specific steps you need to follow to ensure a smooth and secure configuration. In this blog post, we'll outline the 13 essential steps to help you get started.

【AOTsend Email API】：
AOTsend is a Transactional Email Service API Provider specializing in Managed Email Service. 99% Delivery, 98% Inbox Rate. $0.28 per 1000 Emails.
AOT means Always On Time for email delivery.

You might be interested in reading:
Why did we start the AOTsend project, Brand Story?
What is a Managed Email API, Any Special?
Best 25+ Email Marketing Platforms (Authority,Keywords&Traffic Comparison)
Best 24+ Email Marketing Service (Price, Pros&Cons Comparison)
Email APIs vs SMTP: How they Works, Any Difference?

Step 1: Understand SMTP and Basic Authentication

Before diving into the configuration, it's crucial to understand what SMTP (Simple Mail Transfer Protocol) is and how basic authentication works within this context. SMTP is the standard for email transmission, while basic authentication verifies user credentials before granting access.

Step 2: Access Your Microsoft 365 Admin Center

To begin, log in to your Microsoft 365 admin center with your administrator credentials. This is where you'll manage your organization's email settings.

Step 3: Navigate to the Exchange Admin Center

From the Microsoft 365 admin center, locate and open the Exchange admin center. This is where you'll configure SMTP settings.

Step 4: Identify Your SMTP Relay Service

Determine which SMTP relay service you'll be using. Microsoft 365 offers its own SMTP relay service, but you can also use third-party services.

Step 5: Configure SMTP Settings

In the Exchange admin center, navigate to the mail flow section and select "connectors." Here, you'll set up a new connector specifically for SMTP relay, configuring the necessary settings like server addresses and ports.

Step 6: Enable Basic Authentication

Within the connector settings, you'll need to enable basic authentication. This typically involves providing a username and password that will be used to authenticate your SMTP relay requests.

Step 7: Test Your SMTP Connection

After configuring basic authentication, it's essential to test your SMTP connection. Send a test email to ensure everything is working as expected.

Step 8: Troubleshoot Issues

If you encounter any problems during testing, refer to Microsoft's documentation or seek help from the community forums for troubleshooting tips.

Step 9: Secure Your Credentials

Basic authentication involves transmitting usernames and passwords, so it's crucial to ensure these credentials are secure. Consider using strong passwords and regularly updating them.

Step 10: Monitor and Maintain Your SMTP Configuration

Regularly monitor your SMTP configuration for any issues or changes that might affect performance. Also, keep up to date with Microsoft 365 updates that could impact your settings.

Step 11: Consider Additional Security Measures

While basic authentication is a common method, consider implementing additional security measures like multi-factor authentication for added protection.

Step 12: Document Your Configuration

Document your SMTP configuration steps and any changes you make. This will help you or other administrators troubleshoot and make future modifications more efficiently.

Step 13: Stay Informed About Best Practices

Keep yourself updated on the latest best practices for SMTP configuration and basic authentication. Microsoft and other IT professionals regularly share valuable insights on optimizing these settings.

By following these 13 steps, you can successfully configure Microsoft 365 SMTP with basic authentication, ensuring secure and efficient email transmission for your organization. Remember to always prioritize security and stay vigilant about protecting your credentials.

AOTsend adopts the decoupled architecture on email service design. Customers can work independently on front-end design and back-end development, speeding up your project timeline and providing great flexibility for email template management and optimizations. Check Top 10 Advantages of Managed Email API. 99% Delivery, 98% Inbox rate. $0.28 per 1000 emails. Start for free. Pay as you go.