We are rescheduling the previously mentioned maintenance on our US1 Firewall, please find the updated information below:
As part of our continuous efforts to improve the performance and reliability of our services, we will be performing an emergency upgrade on our US1 Firewall on the schedule below.
Type: Emergency Firewall Maintenance
Old Start Time: 2025-11-06 08:00 UTC Old End Time: 2025-11-06 11:00 UTC
New Start Time: 2025-11-09 08:00 UTC New End Time: 2025-11-09 11:00 UTC
Affected Site: US1 SMSC and MMSC
Impact: Brief service interruption (up to 6 minutes) during failover for MMS and SMS over US1 SMSC Services will resume automatically post-upgrade
During the maintenance period we recommend that you connect to our secondary SMSC US7: us7.smpp.api.sinch.com us7.httpsms.api.sinch.com us7.httplookup.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. Please contact support@sinch.com should you require further information or assistance.
Posted Nov 05, 2025 - 16:56 UTC
Scheduled
Dear Client,
We are reaching out to inform you that as part of our continuous efforts to improve the performance and reliability of our services, we will be performing an emergency upgrade on our US1 Firewall on the schedule below.
Type: Firewall Maintenance
Start Time: 2025-11-06 08:00 UTC End Time: 2025-11-06 11:00 UTC
Affected Site: US1
Impact: Brief service interruption (up to 6 minutes) during failover Services resume automatically post-upgrade
During the maintenance period we recommend that you connect to our secondary site US7: us7.smpp.api.sinch.com us7.httpsms.api.sinch.com us7.httplookup.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. Please contact support@sinch.com should you require further information or assistance.