Hi @Sajid Ali thanks for the question. based on this email you shared it looks like issue can be best answered by Twilio Team on their platform: https://support.twilio.com/hc/en-us/articles/226478767-Monitoring-Updates-to-Twilio-REST-API-Security-Settings
Issue with Receiving Messages in Production Environment
I received this email from Twilio. When I send a message directly to Twilio's API, it gets received, but when we send a message in production, it doesn't get received. I think it's because they've blocked it due to pinning certificates. I checked my services and didn't find any certificates. Can you please help me resolve this issue? It would be better if you could do it for me.
Email from the Twilio
Hi azure_acct_6f95ef82e91dd48c8d275f86e850e957cecaa0c1, We highly discourage customers from pinning certificates as it can expose them to potential security risks and may cause downtimes for their services. We cannot guarantee that customers with pinned certificates will not experience issues. It's important to clarify that only the US1 regional endpoints are affected. The IE1 endpoints are not affected by this change. If you are using Twilio's API following our recommended approach, no action is required from your side. Your services will continue to work with the updated certificates and serial numbers as expected. Please note that only customers actively pinning certificates could potentially experience issues. If you encounter connection problems with your services after December 11, 2023, we strongly encourage you to stop pinning certificates. By doing so, you eliminate the security risks associated with pinning and ensure the smooth operation of your services. For more information, please refer to the following helpful docs: Official Twilio Documentation: Monitoring Updates to Twilio REST API Security Settings https://support.twilio.com/hc/en-us/articles/226478767-Monitoring-Updates-to-Twilio-REST-API-Security-Settings DigiCert: Stop Pinning Certificates https://www.digicert.com/blog/certificate-pinning-what-is-certificate-pinning DigiCert ICA Update https://knowledge.digicert.com/alerts/digicert-ica-update Thank you for your understanding and cooperation. cstreet@twilio.com ・ December 15 2023, 04:09 PM