Python email sending failing on SSL read

Title: Troubleshooting Python Email Sending Failures on SSL Read
Introduction:
Sending emails in Python is a common task, often accomplished using libraries like smtplib and SSL/TLS encryption to secure the communication. However, you may encounter issues like SSL read failures, leading to unsuccessful email sending. In this tutorial, we will explore common causes of SSL read errors and provide a code example to help you troubleshoot and resolve such issues.
Prerequisites:
Common Causes of SSL Read Failures:
Incorrect SMTP Server Settings:
Ensure that you are using the correct SMTP server address, port, and security settings. SSL/TLS encryption requires the proper server configuration to work. Check the email service provider's documentation for the correct SMTP settings.
SSL Certificate Issues:
SSL read failures can occur when there are problems with SSL certificates. Verify that your email service provider's SSL certificate is up-to-date and valid.
Firewall or Antivirus Interference:
Firewalls or antivirus software may block the connection between your Python script and the SMTP server. Make sure your firewall allows outgoing connections on the SMTP server's port.
Using an Outdated Python Version:
Older versions of Python may have SSL/TLS issues. Update your Python to the latest version to ensure compatibility with modern security protocols.
Insecure SSL Context:
Ensure that you are using a secure SSL context with the appropriate settings. Creating an SSL context is essential for secure communication.
Now, let's examine a Python code example that sets up a secure email connection and handles SSL read failures.
In this code example, we create a secure SSL context using ssl.create_default_context() and then establish a connection to the SMTP server using smtplib.SMTP. The starttls method is called with the SSL context to enable a secure connection.
If an SSL read failure occurs, the exception