Certificate Update for smpp, httplookup and httpsms endpoints

Scheduled Maintenance Report for Sinch

Completed

The scheduled maintenance has been completed.

Posted Sep 29, 2025 - 12:00 UTC

In progress

Scheduled maintenance is currently in progress. We will provide updates as necessary.

Posted Sep 29, 2025 - 09:00 UTC

Update

Sinch will be performing a scheduled maintenance to renew the below SSL certificates:

eu4.smpp.api.sinch.com
eu3.smpp.api.sinch.com
us3.smpp.api.sinch.com
eu1.httplookup.api.sinch.com
eu3.httplookup.api.sinch.com
us3.httplookup.api.sinch.com
eu1.httpsms.api.sinch.com
eu3.httpsms.api.sinch.com

Type: Scheduled Maintenance

Maintenance: SSL Certificate Updates

Start Time: 2025-09-29 09:00 UTC
End Time: 2025-09-29 12:00 UTC

Impact: Clients connecting to the below endpoints via the SSL secure port will fail if the client SSL application does not have the updated SSL certificate preloaded in its SSL trust store for a seamless SSL certificate switchover.

eu4.smpp.api.sinch.com, eu3.smpp.api.sinch.com, us3.smpp.api.sinch.com, eu1.httplookup.api.sinch.com, eu3.httplookup.api.sinch.com, us3.httplookup.api.sinch.com, eu1.httpsms.api.sinch.com, eu3.httpsms.api.sinch.com.

We appreciate your patience and apologize for any inconvenience experienced during this maintenance period. If for any reason the maintenance is extended or cancelled we will advise you accordingly.

Download the certificate files for all the above mentioned certificates here:
https://clxgroup.sharepoint.com/:f:/s/CLX_Support_Anonymous_link/ElmRBxYBhBVOuCqucFkgBVsB8ErUnesfAEe1vlpazgJqPg?e=Swh6A8

Please contact support@sinch.com should you require further information or assistance.

Posted Sep 17, 2025 - 21:40 UTC

Scheduled

Posted Sep 15, 2025 - 09:19 UTC

This scheduled maintenance affected: Messaging APIs (SMPP - US, SMPP - EU, HTTP - US, HTTP - EU) and Lookup API Endpoints (HTTP EU, HTTP US).