Upcoming Deprecation of TLS 1.2 for Messaging Services (March 2026)

Scheduled for Nov 19, 16:00 - 17:00 CET

Scheduled

At CM.com, we are committed to providing secure and reliable services while adhering to the highest industry standards. As part of this commitment, we will be discontinuing support for Transport Layer Security (TLS) 1.2 on March 1, 2026, for all messaging-related services.

This change will impact all connections to our Business Messaging Gateway API and SMPP servers. After this date, any connection attempts made using TLS 1.2 will no longer be supported. To ensure uninterrupted service, we kindly request that you update your integrations to support TLS 1.3 before the deadline.
Why TLS 1.3?

TLS 1.3 represents a significant advancement in security and performance. By removing outdated cryptographic functions and streamlining the connection handshake process, TLS 1.3 offers enhanced protection for your data and improved efficiency. This upgrade is essential to safeguard your communications and maintain the stability of your services.

What You Need to Do
We strongly encourage all customers to review their systems and update any clients still using TLS 1.2. Please ensure your integrations are tested and fully compatible with TLS 1.3 well ahead of March 1, 2026, to avoid any disruptions.

For more details about this update and guidance on how to prepare, please visit our release notes here:
https://releasenotes.cm.com/release-notes/connectivity-platform/messaging-platform
Posted Nov 19, 2025 - 15:34 CET
This scheduled maintenance affects: Messaging (Business Messaging API, Smpp, WhatsApp Business, RCS Business Messaging).