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MTN SA is currently experiencing technical issues on their core network and as a result SMS delivery towards MTN SA is degraded. Please do not resubmit any messages. Type: Mobile Network Operator Impact: Customers may experience irregular delivery with inconsistent delivery times when sending messages to MTN SA. We appreciate your patience while the operator works to resolve the issue and we will keep you updated. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

We are observing that services have been restored. We will continue to monitor closely while awaiting feedback from MTN SA.

After extensive monitoring, we believe this issue to be resolved.

Telkom Mobile SA is currently experiencing technical issues on their core network and as a result SMS delivery towards Telkom Mobile SA is degraded. Please do not resubmit any messages. Type: Network Outage Impact: Customers may experience irregular delivery with inconsistent delivery times when sending messages to Telkom Mobile SA. We appreciate your patience while the operator works to resolve the issue and we will keep you updated. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

After extensive monitoring we believe this issue to be resolved.

Earlier this morning, three of our upstream ISPs experienced a sustained DDoS (Distributed Denial of Service) attack impacting their networks and infrastructure. The attack took place between 08:42 and 10:03 (UTC+2) and has since subsided. During that time, some customers may have noticed intermittent latency, packet loss, delayed message processing or temporary connectivity instability. Our team is actively working with the engineering teams at our providers to mitigate the impact and maintain service stability as effectively as possible. We continue to monitor the situation closely and will take all necessary steps to minimise any further disruption. We appreciate your patience and understanding and will provide further updates should the situation materially change. Please contact support@smsportal.com should you require further information or assistance. The SMSPortal Team

Connectivity has remained stable throughout the day and based on extensive monitoring, we believe the issue to be resolved.

We have been made aware of a wide-scale internet outage in South Africa affecting multiple ISPs, which began at approximately 13:10 (UTC+2). Services appear to have largely recovered around 14:15. Our platforms remained online and fully operational throughout the incident. Customers who may still be experiencing connectivity issues are advised to contact their ISP for further assistance. Alternatively, you are welcome to reach out to us at help@smsportal.com and we will gladly assist where possible. We are continuing to monitor the situation and will provide updates if required. The SMSPortal Team

After extensive monitoring we believe this incident to be resolved.

Telkom Mobile SA is currently experiencing technical issues and as a result SMS delivery towards Telkom Mobile SA is degraded. Please do not resubmit any messages. Type: Network Outage Impact: Customers may experience irregular delivery with inconsistent delivery times when sending messages to Telkom Mobile SA. We appreciate your patience while the operator works to resolve the issue and we will keep you updated. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

We are observing that services have been restored. We will continue to monitor closely while awaiting feedback from Telkom Mobile SA.

After extensive monitoring we believe this issue to be resolved.

Some customers may currently be experiencing intermittent international connectivity issues on the SEACOM network, which could affect access to our platform. Type: Connectivity Degradation Issue Start Time: 04 November 2025 @ 10:20 (UTC+2) Impact: Customers connecting from outside South Africa may experience slower response times or occasional interruptions when accessing our platform. Our team is actively working with SEACOM to identify the root cause and implement any necessary preventative measures. We appreciate your patience and understanding while this is being resolved. Please contact help@smsportal.com if you require further information or assistance. The SMSPortal Team

We have been informed that the issue was caused by dual-path fibre breaks and it has since been resolved. Our team will continue to monitor the situation closely to ensure everything remains stable.

Cell C SA experienced technical issues between 09:35 (UTC+2) and 10:54 (UTC+2) on their SMSCs. As a result, SMS delivery towards Cell C SA was degraded during this time. SMSPortal rerouted all possible traffic in order to limit any impact to customers. Type: Network Outage Start: 01 Nov 2025 @ 09:35 (UTC+2) End: 01 Nov 2025 @ 10:54 (UTC+2) Impact: Customers may have experienced irregular delivery with inconsistent delivery times when sending messages to Cell C SA. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

Some customers may have experienced intermittent connectivity issues affecting access to our platform due to an incident on the SEACOM network. While connectivity has since been restored, we are still awaiting further feedback from SEACOM to confirm the root cause. Type: Connectivity Degradation Issue Start Time: 24 Oct 2025 @ 12:25 (UTC+2) Issue End Time: 24 Oct 2025 @ 13:00 (UTC+2) Impact: Customers may have experienced slower response times or brief interruptions in service. We’ll continue to closely monitor the situation and work with SEACOM’s engineers to identify and address the underlying cause. Thank you for your patience and understanding. Please contact help@smsportal.com if you require further information or assistance. The SMSPortal Team

Connectivity remains stable and we’ll continue to monitor closely over the next few hours.

After extensive monitoring we believe this issue to be resolved.

We’re aware of connectivity issues between two of our core data centres. Our teams are actively investigating and working to restore full stability. Incident Summary: Type: Network Degradation Issue Start Time: 22 Oct 2025 @ 16:22 (UTC+2) Impact: Some customers may experience intermittent connectivity or slower response times on our platform. We sincerely apologise for the disruption and understand the impact this may have. Our engineers are working closely with the data centre teams to resolve the issue as quickly as possible. If you require any further information, assistance, or clarification regarding this incident, please do not hesitate to reach out to our dedicated technical support team at help@smsportal.com .

Connectivity issues have been resolved and all services are fully operational. Our teams are continuing to investigate the root cause with the data centre engineers to ensure this doesn’t recur.

After extensive monitoring, we believe the issue has been resolved and systems continue to operate as expected.

We experienced an issue where our time servers fell out of sync, which caused some scheduled outbound messages to be delayed. Our engineers have corrected the issue and all affected messages have now been successfully processed. Type: Outbound Message Delays Impact: A small portion of outbound messages were queued and processed once time synchronisation was restored. We sincerely apologise for any inconvenience this may have caused. Our team is implementing additional safeguards to help prevent similar issues in the future. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

We are actively investigating a connectivity issue affecting one of our core data centres. Incident Summary: Type: Network Outage Issue Start Time: 30 May 2025 @ 13:29 (UTC+2) Impact: Customers may experience intermittent connectivity or slower response times on our platform. We sincerely apologise for the inconvenience and are working urgently to identify and resolve the root cause. Ensuring the stability of our services is our top priority. If you require any further information, assistance, or clarification regarding this incident, please do not hesitate to reach out to our dedicated technical support team at help@smsportal.com . The SMSPortal Team

All services have been restored. We're still investigating the root cause and will provide further details as soon as possible.

After extensive monitoring we believe the issue has been fully resolved. A detailed postmortem report outlining the root cause and corrective actions will follow shortly.

**Post Incident Summary:** We want to provide full transparency regarding the recent service interruption, including what caused it, how it was resolved, and the steps we are taking to prevent recurrence. We understand the disruption this may have caused and sincerely apologise for the inconvenience. **Timeline of Events:** * **Wednesday, 28 May 2025:** Our primary Internet Service Provider \(ISP\) performed planned maintenance overnight which caused intermittent service interruptions. We were not notified beforehand which limited our ability to be proactive. We pushed for feedback regarding the lack of notification along with any details of further upcoming maintenance that we might have missed but were told they are still investigating internally. * **Thursday, 29 May 2025:** Further maintenance was performed by the same ISP overnight, once again without notification. Following this, one of our dual uplinks at our primary data centre went offline, reducing our network redundancy. We immediately escalated the matter to the ISP for urgent resolution. * **Friday, 30 May 2025:** While the link issue was being addressed, a separate failure occurred at 13:29 \(UTC\+2\) on the MLAG \(Multi-Chassis Link Aggregation\) between two core switches at our primary data centre. This triggered a switching loop, severely affecting connectivity across our platform. Our engineering team swiftly intervened by manually disabling one of the affected switches, allowing the other to assume full control and stabilise the network. Engineers were simultaneously dispatched to the data centre to be available on site for any physical hardware changes or replacements. Services were restored at 13:50 \(UTC\+2\). **Root Cause:** The incident was the result of two interrelated issues: 1. **Unnotified ISP Maintenance** – Led to loss of one of our critical network paths and degraded fault tolerance. 2. **MLAG Failure** – Caused a switching loop, which severely impacted internal routing at our primary data centre. **What We’ve Done and Are Doing:** We’ve taken the following steps to mitigate future risk and strengthen our infrastructure: * **New Connectivity Provider Onboarded:** We have already signed with an additional ISP to introduce another path for internet connectivity. This will significantly increase network redundancy and resilience. * **Ongoing Hardware Investigation:** We are actively working with our network equipment vendor to investigate the MLAG failure and ensure proper fixes or configuration updates are in place. * **Improved Monitoring & Response:** We continue to enhance our network monitoring and alerting systems to detect failures more quickly and initiate automatic failover where applicable. * **AFRINIC IP Resource Request:** We applied for additional IP resources from AFRINIC over nine months ago. Unfortunately, due to their receivership status, this process has been delayed. We anticipate progress once their board is appointed on 23 June 2025. The additional IP space will enable us to deploy enhanced routing strategies and connectivity options. **Looking Ahead:** These events have underscored the importance of redundancy, additional providers, and robust internal safeguards, all of which are being actively reinforced. If you have any questions or would like to discuss this further, our support team is available at [help@smsportal.com](mailto:help@smsportal.com). Thank you for your understanding and continued trust. The SMSPortal Team

MTN South Africa is currently experiencing delays in returning delivery receipts (DLRs) for Reverse Billed (FTEU) messaging. Type: DLR Delays Issue Start Time: 8 May 2025 @ 08:10 (UTC+2) Impact: Customers may notice delays in receiving delivery receipts for Reverse Billed (FTEU) messages sent to MTN SA. We appreciate your patience as the operator investigates and works to resolve the issue. Please do not resubmit any potentially affected messages. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

After extensive monitoring we believe this issue to be resolved.

We have been informed that MTC Namibia is experiencing network issues. Their team is actively working to restore services as soon as possible. SMSPortal is currently queueing all messages until the issue is resolved. Please do not resubmit any messages as they will be processed once connectivity is restored. Type: Network Outage Issue Start Time: 12 March 2025 @ 09:00 (UTC+2) Impact: Customers may experience irregular delivery with inconsistent delivery times when sending to MTC Namibia. We appreciate your patience while the operator works to resolve the issue and we will keep you updated. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

MTC Namibia have informed us that the issue has been resolved. We will continue to monitor extensively.

After extensive monitoring we believe this issue to be resolved.

Some customers may have experienced international connectivity issues on the SEACOM network affecting access to our platform. While the issue appears to have been resolved, we are still awaiting feedback from our Dedicated Internet Access (DIA) providers to determine the root cause. Type: Connectivity Degradation Issue Start Time: 28 Feb 2025 @ 17:41 (UTC+2) Issue End Time: 28 Feb 2025 @ 18:54 (UTC+2) Impact: Customers connecting from outside South Africa may have experienced intermittent connectivity or increased response times on our platform. We will continue to monitor the situation and work closely with their engineers to uncover the root cause and implement any necessary preventative measures. Thank you for your patience and understanding. Please contact help@smsportal.com if you require further information or assistance. The SMSPortal Team

We have been informed by SEACOM that the current issue is intermittent and that they are still experiencing service degradation. They are actively investigating the root cause and will continue to provide us with progressive updates.

SEACOM have informed us that they have made some interventions and the issue is resolved. They will continue to monitor closely for stability.

Our DevOps engineers detected an issue with one of our database servers, which impacted one of our core availability groups. The affected server was promptly removed from the group to restore services. Our sincere apologies for any inconvenience caused. Our team is actively investigating the root cause and implementing preventive measures to mitigate future occurrences. Incident Summary: Type: Outbound SMS Degradation Issue Start Time: 13 Feb 2025 @ 09:08 (UTC+2) Issue End Time: 13 Feb 2025 @ 09:24 (UTC+2) Impact: During the specified timeframe messages were being queued and were processed once services were restored. Some API channels may have rejected messages as an automatic safety measure. If you require any further information, assistance, or clarification regarding this incident, please do not hesitate to reach out to our support team at help@smsportal.com .

We recently identified and resolved an issue impacting inbound MO replies, which temporarily affected the timely processing of some replies. We’ve now cleared the backlog and are actively monitoring our MO queues to ensure continued, seamless performance. Type: MO (Reply) Delays Impact: Customers may have experienced varied receipt times for a portion of MO replies from subscribers. We sincerely apologise for any inconvenience caused. Our team has implemented preventive measures to minimise the likelihood of similar issues in the future. Please contact support@smsportal.com should you require further information or assistance. The SMSPortal Team

After extensive monitoring we believe this issue to be resolved.

MTN SA are currently experiencing a delay in returning delivery receipts. Type: DLR Delays Impact: Customers may experience delays in delivery receipts when sending towards MTN SA. We appreciate your patience while the operator works to resolve the issue and we will keep you updated. Please do not resubmit any messages that you believe may be affected. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

MTN SA have informed us that the issue has been resolved. We will continue to monitor extensively.

After extensive monitoring we believe this issue to be resolved.

Vodacom SA is currently experiencing a technical issue on one of their SMSCs. SMSPortal have rerouted all traffic in order to limit any impact to customers. Type: Network Outage Incident Start Time: 2 October 2024 @ 10:45 (UTC+2) Impact: Customers may experience irregular delivery with inconsistent delivery times when sending messages to Vodacom SA. We appreciate your patience while the operator works to resolve the issue, and we will keep you updated. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

After extensive monitoring we believe this issue to be resolved.

MTN SA is currently experiencing service degradation on their SMSCs. SMSPortal have rerouted all traffic in order to limit any impact to customers. Type: Mobile Network Operator Impact: Customers may experience irregular delivery with inconsistent delivery times when sending messages to MTN SA. We appreciate your patience while the operator works to resolve the issue and we will keep you updated. Please contact help@smsportal.com should you require further information or assistance. The SMSPortal Team

Services have been restored and MTN SA have confirmed that the issue has been resolved.

We are aware of an issue that caused our FTP, HTTP and Web Services APIs to return a 503 error response. The issue has been resolved and our team is actively working on preventative measures to ensure the stability of this service moving forward. Incident Summary: Type: API Degradation (FTP, HTTP & Web Services) Issue Start Time: 14 August 2024 @ 11:30 (UTC+2) Issue End Time: 14 August 2024 @ 12:32 (UTC+2) Impact: During the specified timeframe, customers might have experienced 503 error responses from our FTP, HTTP and Web Services APIs. We understand the inconvenience this may have caused and sincerely apologise for any disruptions to your operations. If you require any further information, assistance, or clarification regarding this incident, please do not hesitate to reach out to our dedicated technical support team at help@smsportal.com . The SMSPortal Team