How to Resolve Certificate Verification Errors in TLS Email with Laravel?

Troubleshooting Certificate Verification Errors in TLS Email with Laravel

When sending TLS emails with Laravel, you may encounter certificate verification errors. This can occur due to a mismatch between the expected certificates and those presented by the email server. Here's how to resolve the "certificate verify failed" error:

Your original configuration using MAIL_ENCRYPTION=ssl should use port 465, not 587.

If your operating system does not manage trusted certificates automatically:

1. Download the cURL cacert.pem Certificate Bundle: Download the bundle from the official cURL website.
2. Add Self-Signed Certificates (Optional): Open the cacert.pem file in a text editor and add any self-signed certificates that need to be accepted.

3. Edit php.ini: Include the following lines to reference the cacert.pem file:

   curl.cainfo = /path/to/cacert.pem
   openssl.cafile = /path/to/cacert.pem

4. Restart PHP-FPM/Web Server: Restart your PHP runtime or web server to apply the changes.

Once these steps are complete, Laravel should be able to verify the SSL certificates correctly and send TLS emails without errors.

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