- Detected by Pingoru
- May 28, 2026, 08:40 AM UTC
- Resolved
- May 28, 2026, 01:12 PM UTC
- Duration
- 4h 32m
Affected: EU: Server-Side: Mail Routing - Office 365EU: Server-Side: Mail routing - Google Workspace
Timeline · 3 updates
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identified May 28, 2026, 08:40 AM UTC
Issue: An Azure storage failure in EU2 is resulting in delays processing messages there, engineering teams are actively mitigating the issue. Symptoms: Some messages processed in EU could be delayed. Next Update In: 30 mins or less
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monitoring May 28, 2026, 09:03 AM UTC
Exclaimer Engineers have successfully mitigated the issue and mailflow had returned to normal levels.
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resolved May 28, 2026, 01:12 PM UTC
The Azure SQL database in EU2 has been fully restored by Microsoft. EU2 endpoints have been re-enabled and mailflow is balanced. All services are confirmed healthy with no further impact to customers.
Read the full incident report →
- Detected by Pingoru
- May 28, 2026, 08:01 AM UTC
- Resolved
- May 29, 2026, 10:47 AM UTC
- Duration
- 1d 2h
Affected: UK: Client Side: Signature Application - Office 365AU: Client-Side: Signature Application - Office 365CA: Client Side: Signature Application - Office 365UAE: Client Side: Signature Application - Office 365DE: Client Side: Signature Application - Office 365EU: Client Side: Signature Application - Office 365US: Client Side: Signature Application - Office 365
Timeline · 5 updates
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investigating May 28, 2026, 08:01 AM UTC
Engineers are aware of an issue impacting our ability to apply signatures to messages as they are composed, the message 'Failed to acquire auth token' is displayed. There is no impact to email delivery at this time, once the issue has been resolved signatures will start to be applied again. If you have our server-side offering configured, then you will find that signatures are applied to messages after they are sent. If you have any other issues, please contact our support team who will be happy to help
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identified May 28, 2026, 12:16 PM UTC
Our team have identified the issue and are actively working on a resolution. Further updates will follow once a fix has been identified.
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monitoring May 28, 2026, 02:17 PM UTC
Engineering has successfully tested and deployed a fix for the add-in to resolve this issue. We will continue to closely monitor the add-in’s performance following the release. Please note that the speed of adoption may vary depending on Outlook cache. If you are currently experiencing any further issues with Exclaimer, please contact our Support team for assistance.
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monitoring May 28, 2026, 04:04 PM UTC
We continue to see a reduction of errors as the new version rolls out and are monitoring its progress. Please note that the speed of adoption may vary depending on Outlook cache. If you are currently experiencing any further issues with Exclaimer, please contact our Support team for assistance.
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resolved May 29, 2026, 10:47 AM UTC
Microsoft have confirmed that the original issue impacting customers was the result of a server-side change that has since been reverted. Our telemetry also confirms that over 40% of customer requests are coming from the newly released version that similarly resolved customer issues prior to Microsoft's deployment reversal, this continues to roll out. We intend to leave this fix in place as it improves the add-ins resilience to possible authentication issues. If you are currently experiencing any further issues with Exclaimer, please contact our Support team for assistance.
Read the full incident report →
- Detected by Pingoru
- May 25, 2026, 04:00 AM UTC
- Resolved
- May 25, 2026, 10:51 AM UTC
- Duration
- 6h 51m
Affected: UK: UI: Admin User InterfaceAU: UI: Admin User InterfaceUI: Admin User InterfaceUAE: UI: Admin User InterfaceDE: UI: Admin User InterfaceEU: UI: Admin User InterfaceUS: UI: Admin User Interface
Timeline · 6 updates
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investigating May 25, 2026, 04:00 AM UTC
We are investigating a possible service alert. Issue: Users are unable to receive any authentication tokens when attempting to login to https://portal.exclaimer.com using password login. The issue currently looks to only be affecting users who are logging into the Exclaimer portal using Password login. Logins using Microsoft/Google SSO currently get through without any issues. Symptoms: Users will be prompted to enter a token when trying to login to the portal but no authentication tokens are received in the user's registered email address.
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investigating May 25, 2026, 08:49 AM UTC
We are continuing to investigate the issue to determine the root cause. Our IT will report back shortly
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investigating May 25, 2026, 09:47 AM UTC
We are still continuing to investigate the issue to determine the root cause. Our IT will report back soon
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monitoring May 25, 2026, 10:32 AM UTC
Our engineers have found the issue and reverted a change. Authentication tokens are now being received and we are continuing to monitor.
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monitoring May 25, 2026, 10:32 AM UTC
We are continuing to monitor for any further issues.
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resolved May 25, 2026, 10:51 AM UTC
Engineers have confirmed that the previous service alert has been resolved. The service is now back to full health and is working as normal. Thank you for your patience.
Read the full incident report →
- Detected by Pingoru
- May 19, 2026, 04:23 PM UTC
- Resolved
- May 19, 2026, 04:23 PM UTC
- Duration
- —
Timeline · 1 update
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resolved May 19, 2026, 04:23 PM UTC
Exclaimer Customers using Exclaimer Cloud for Microsoft 365 would have encountered an error when attempting to run the connector setup wizard from the 'Manage Mail Flow' page, causing the wizard to fail to run. This issue would have no impact on customers who have not previously run the Connector Setup wizard for Microsoft 365
Read the full incident report →
- Detected by Pingoru
- May 11, 2026, 05:33 PM UTC
- Resolved
- May 12, 2026, 08:43 AM UTC
- Duration
- 15h 9m
Affected: UK: Server-Side: Signature Application
Timeline · 3 updates
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investigating May 11, 2026, 05:33 PM UTC
Exclaimer Engineers are looking into an issue that will result in customers seeing signatures are applied after a short delay at this time. More information will be provided when possible.
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monitoring May 11, 2026, 05:45 PM UTC
Engineers have confirmed that the issue has been addressed with additional capacity being utilized within the UK. They are now monitoring for any further issues.
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resolved May 12, 2026, 08:43 AM UTC
This incident has been resolved.
Read the full incident report →
- Detected by Pingoru
- Apr 24, 2026, 05:21 PM UTC
- Resolved
- Apr 25, 2026, 08:41 AM UTC
- Duration
- 15h 20m
Affected: US: Server-Side: Signature ApplicationUS: UI: Admin User Interface
Timeline · 5 updates
Read the full incident report →
- Detected by Pingoru
- Apr 20, 2026, 06:46 PM UTC
- Resolved
- Apr 17, 2026, 07:00 AM UTC
- Duration
- —
Timeline · 1 update
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resolved Apr 20, 2026, 06:46 PM UTC
An unexpected bad release of the Exclaimer Cloud Portal was able to be deployed to regions, preventing the Portal from being accessible to allow users to configure signatures or complete the Exclaimer onboarding. Automated rollbacks detected the error and reverted to the previous healthy version. An internal investigation was able to identify the cause of the bad release being able to be deployed to our systems, and further checks have been implemented to prevent future occurrences.
Read the full incident report →
- Detected by Pingoru
- Apr 15, 2026, 11:03 AM UTC
- Resolved
- Apr 30, 2026, 11:11 AM UTC
- Duration
- 15d
Timeline · 4 updates
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investigating Apr 15, 2026, 11:03 AM UTC
Exclaimer engineers are currently investigating a problem where signatures are being applied to messages even though a signature is already present on the most recent message. The issue does not appear to be impacting all mail at this time. We will provide more information as it becomes available.
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identified Apr 16, 2026, 03:23 PM UTC
Exclaimer Engineers have been able to identify changes being made by Outlook when the email signature is applied, and then the email is saved as a draft. Resulting in a secondary signature being applied server-side if this is also enabled. The issue is being raised with Microsoft directly to understand this behavioural change further.
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identified Apr 17, 2026, 09:42 AM UTC
Exclaimer Engineers have made a change to signature generation to help prevent the issue from occurring for client-side signatures. We are continuing to raise the issue with Microsoft to gain a more in-depth understanding of the problem.
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resolved Apr 30, 2026, 11:11 AM UTC
Exclaimer Engineers have been able to release a change to the Add-in at the start of this week, alongside a fix that was released by Microsoft, and the issue no longer looks to be occurring frequently within messages. If you are still seeing duplicate email signatures being applied. Please reach out to our support team, who will be happy to help.
Read the full incident report →
- Detected by Pingoru
- Apr 07, 2026, 01:18 AM UTC
- Resolved
- Apr 16, 2026, 06:57 PM UTC
- Duration
- 9d 17h
Affected: US: Server-Side: Mail Routing - Office 365UAE: Server-Side: Mail Routing - Office 365
Timeline · 8 updates
Read the full incident report →
- Detected by Pingoru
- Apr 01, 2026, 10:31 AM UTC
- Resolved
- Apr 04, 2026, 10:03 AM UTC
- Duration
- 2d 23h
Timeline · 3 updates
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investigating Apr 01, 2026, 10:31 AM UTC
We are currently investigating an issue with some users not being able to access the Exclaimer Portal when choosing Launch, where the portal gets caught on a loading page. The issue does not appear to affect all users and all subscriptions at this time
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identified Apr 01, 2026, 12:06 PM UTC
Exclaimer Engineers have identified the cause of the issue and are currently working on a solution. Further updates will be provided once this is released.
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resolved Apr 04, 2026, 10:03 AM UTC
Exclaimer Engineers have identified the cause of the issue and released a fix, and the issue is no longer impacting users who previously reported it. Extended monitoring has not indicated any other outstanding issues at this time. If you are continuing to have issues accessing your Exclaimer subscription, please reach out to our support team, who will be happy to help.
Read the full incident report →
- Detected by Pingoru
- Apr 01, 2026, 07:25 AM UTC
- Resolved
- Apr 01, 2026, 02:17 PM UTC
- Duration
- 6h 52m
Affected: AU: Server-Side: Mail Routing - Office 365AU: Server-Side: Mail Routing - Exchange
Timeline · 4 updates
Read the full incident report →
- Detected by Pingoru
- Mar 20, 2026, 02:59 PM UTC
- Resolved
- Mar 23, 2026, 11:18 AM UTC
- Duration
- 2d 20h
Affected: DE: Server-Side: Signature Application
Timeline · 4 updates
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investigating Mar 20, 2026, 02:59 PM UTC
We are currently investigating an issue where signatures are not being applied to messages at this time. There is no impact on mail flow; emails will continue to be routed through Exclaimer without issue. If you have any ongoing issues or concerns, please reach out to our Support Team, who will be able to assist.
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investigating Mar 20, 2026, 04:02 PM UTC
We are continuing to investigate the issue.
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monitoring Mar 20, 2026, 05:22 PM UTC
Exclaimer Engineers have been able to identify a possible cause and have performed a change to help address the issue being seen. Signatures now look to be getting applied to all messages as expected, and engineers will continue to monitor.
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resolved Mar 23, 2026, 11:18 AM UTC
After extended monitoring over the weekend, we have been able to confirm the issue has been resolved and there have been no further errors or missed signatures for our customers. Customers who are continuing to see issues should contact our support team, who will be happy to help investigate any issues you may be seeing.
Read the full incident report →
- Detected by Pingoru
- Mar 17, 2026, 10:59 PM UTC
- Resolved
- Mar 18, 2026, 08:34 AM UTC
- Duration
- 9h 34m
Affected: UK: Server-Side: Mail Routing - Office 365UK: Server-Side: Mail Routing - Exchange
Timeline · 3 updates
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investigating Mar 17, 2026, 10:59 PM UTC
We are currently investigating this issue.
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monitoring Mar 18, 2026, 08:10 AM UTC
We have identified what was behind the degraded service in the UK and have put a fix in place to remediate the issue. Mail routing has returned to a stable state and we are currently monitoring the situation
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resolved Mar 18, 2026, 08:34 AM UTC
Engineers have confirmed that the previous service alert has been resolved. The service is now back to full health and is working as normal. Thank you for your patience.
Read the full incident report →
- Detected by Pingoru
- Mar 04, 2026, 02:19 PM UTC
- Resolved
- Mar 06, 2026, 09:39 AM UTC
- Duration
- 1d 19h
Affected: UK: UI: New Customer OnboardingAU: UI: New Customer OnboardingUI: New Customer OnboardingUAE: UI: New Customer OnboardingDE: UI: New Customer OnboardingEU: UI: New Customer OnboardingUS: UI: New Customer Onboarding
Timeline · 2 updates
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investigating Mar 04, 2026, 02:19 PM UTC
Exclaimer Engineers are investigating a possible issue that may impact some customers who are configuring Exclaimer Cloud for Microsoft 365. The issue is not expected to impact a larger number of customers, and re-running the setup should resolve the issue. If you are having issues with the setup, please reach out to our Support Team, who will be able to assist.
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resolved Mar 06, 2026, 09:39 AM UTC
This incident has been resolved.
Read the full incident report →
- Detected by Pingoru
- Feb 16, 2026, 06:05 PM UTC
- Resolved
- Feb 16, 2026, 09:17 PM UTC
- Duration
- 3h 11m
Affected: UK: UI: New Customer OnboardingAU: UI: New Customer OnboardingUI: New Customer OnboardingUAE: UI: New Customer OnboardingDE: UI: New Customer OnboardingEU: UI: New Customer OnboardingUS: UI: New Customer Onboarding
Timeline · 4 updates
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investigating Feb 16, 2026, 06:05 PM UTC
Exclaimer Engineers have been made aware that our certification provider is currently undergoing emergency maintenance on their platform. This may affect customers who are setting up a subscription or attempting to purchase one. We will provide further updates once they are available. If you have any issues with Exclaimer at this time, please reach out to our great Support team, who will be able to assist further.
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identified Feb 16, 2026, 06:45 PM UTC
Exclaimer Engineers are continuing to monitor the ongoing maintenance with our certification provider and identify impacted customers. The next update will be provided in an hour's time, or once further information becomes available.
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monitoring Feb 16, 2026, 07:25 PM UTC
Our certificate provider has confirmed that the maintenance has been completed, and we are seeing that certificates are being created as expected for subscriptions. Exclaimer Engineers will continue to monitor for any further issues at this time.
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resolved Feb 16, 2026, 09:17 PM UTC
This incident has been resolved.
Read the full incident report →
- Detected by Pingoru
- Feb 04, 2026, 01:52 PM UTC
- Resolved
- Feb 05, 2026, 06:26 PM UTC
- Duration
- 1d 4h
Affected: UI: Authentication and Billing Portal
Timeline · 3 updates
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investigating Feb 04, 2026, 01:52 PM UTC
Exclaimer Engineers are aware that the Portal is not loading as expected for customers again after an earlier issue. This is being looked into as a high priority for our team. This issue does not impact signature rules, and signatures continued to be applied to users as expected during the issue. If you have any questions or concerns, please reach out to our support team, who will be happy to assist.
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monitoring Feb 04, 2026, 02:07 PM UTC
A fix has been implemented, and access to our portal has been restored. Our Engineering team is now monitoring the service for any further issues.
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resolved Feb 05, 2026, 06:26 PM UTC
After extended monitoring, our engineers have not seen any further issues stopping customers from accessing our Portal. This weekends planned maintenance work will continue as planned as part of this work will help address the stability of the Portal and improve accessibility for customers in the future. If you have any questions or concerns, please don't hesitate to contact our great support team, who will be happy to help.
Read the full incident report →
- Detected by Pingoru
- Feb 02, 2026, 11:10 PM UTC
- Resolved
- Feb 02, 2026, 11:59 PM UTC
- Duration
- 49m
Affected: AU: Server-Side: Mail Routing - Office 365
Timeline · 3 updates
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identified Feb 02, 2026, 11:10 PM UTC
Exclaimer engineers have identified a global issue with Azure that is impacting our ability to handle messages, as new compute resource cannot currently be created to handle demand, and as such customers in AU might experience issues with message delivery. You can look to disable the Mail flow rule ‘Identify messages to send to Exclaimer Cloud’ to restore mail flow. We will continue to monitor the performance to ensure that the service fully recovers, and provide any updates received by Microsoft. They currently anticipate the fix for this will be in place by 00:00 UTC. If you are experiencing any other issues with Exclaimer at this time, please contact our support team right away.
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monitoring Feb 02, 2026, 11:33 PM UTC
Scaling capability appears to have been restored by Microsoft, we're now monitoring our service to ensure it recovers to full capacity.
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resolved Feb 02, 2026, 11:59 PM UTC
Azure service has been restored, and services have scaled up as required, we are no longer seeing any issues within our service as a consequence. If you are continuing to experience issues within Exclaimer at this time, please don't hesitate to reach out to our support team, who will be happy to help!
Read the full incident report →
- Detected by Pingoru
- Feb 02, 2026, 02:18 PM UTC
- Resolved
- Feb 03, 2026, 12:06 PM UTC
- Duration
- 21h 48m
Affected: UK: Server-Side: Mail Routing - Office 365
Timeline · 3 updates
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investigating Feb 02, 2026, 02:18 PM UTC
Exclaimer Engineers are aware of a relay IP address within the UK having been added to the Sender Score Return Path Blocklist. The IP is no longer reporting as being on this list. We have reached out to obtain more information. Client-side signatures are unaffected by this issue. If you are experiencing issues with mail flow at this time, we advise you to disable the Exclaimer Mail flow rule within the Exchange Admin Center and to contact our support team who will be more than happy to help.
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monitoring Feb 02, 2026, 03:11 PM UTC
Monitoring has indicated there has been no impact from the listing, and the IP has not been added back onto the list at this time. Our Engineers will continue to monitor for any further reports.
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resolved Feb 03, 2026, 12:06 PM UTC
No issues have occurred since our last update, and we will now mark this incident as resolved. If you require any assistance, please contact our support team, who will be more than happy to help.
Read the full incident report →
- Detected by Pingoru
- Jan 27, 2026, 03:41 PM UTC
- Resolved
- Jan 28, 2026, 04:23 PM UTC
- Duration
- 1d
Timeline · 2 updates
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investigating Jan 27, 2026, 03:41 PM UTC
Exclaimer Engineers are investigating an issue impacting the reporting of signatures applied through the Exclaimer Add-in or Signature Sync system. Client-side Signatures will continue to be applied as expected to messages at this time
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resolved Jan 28, 2026, 04:23 PM UTC
Exclaimer Engineers have successfully resolved the issue and confirmed that there was no impact preventing signatures from being added. If you are experiencing any issues with signatures not appearing when expected, please reach out to our support team, who will be happy to assist.
Read the full incident report →
- Detected by Pingoru
- Jan 23, 2026, 02:39 AM UTC
- Resolved
- Jan 26, 2026, 02:33 PM UTC
- Duration
- 3d 11h
Affected: EU: Server-Side: Mail Routing - Office 365US: Server-Side: Mail Routing - Office 365CA: Server-Side: Mail Routing - Office 365UAE: Server-Side: Mail Routing - Office 365AU: Server-Side: Mail Routing - Office 365UK: Server-Side: Mail Routing - Office 365DE: Server-Side: Mail Routing - Office 365
Timeline · 4 updates
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investigating Jan 23, 2026, 02:39 AM UTC
We are currently investigating an issue affecting email delivery within our Exclaimer services. Email routed through Exchange Online may be impacted due to an ongoing Microsoft incident (MO1221364).
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monitoring Jan 23, 2026, 06:32 AM UTC
We have confirmed that Microsoft has deployed a fix to address the issue and confirmed resolution for Incident (MO1221364). We are continuing to monitor the service for stability.
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monitoring Jan 23, 2026, 06:38 AM UTC
We are continuing to monitor for any further issues.
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resolved Jan 26, 2026, 02:33 PM UTC
No further issues with mail flow have been identified over the weekend that were caused by this incident. If you are continuing to experience issues with your Exclaimer Subscription, please don't hesitate to reach out, and our team will be more than happy to assist.
Read the full incident report →
- Detected by Pingoru
- Jan 09, 2026, 02:51 PM UTC
- Resolved
- Jan 19, 2026, 08:56 PM UTC
- Duration
- 10d 6h
Affected: US: Server-Side: Mail Routing - Office 365
Timeline · 4 updates
Read the full incident report →
- Detected by Pingoru
- Dec 18, 2025, 10:27 AM UTC
- Resolved
- Feb 20, 2026, 03:56 PM UTC
- Duration
- 64d 5h
Timeline · 3 updates
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identified Dec 18, 2025, 10:27 AM UTC
Exclaimer is aware of an error that has resulted in duplicate payments being taken from some customers this month. We are in the process of refunding all duplicate payments; these should be returned within seven(7) business days. We apologise for any inconvenience that may have occurred. More information will be provided directly to impacted customers.
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identified Dec 19, 2025, 09:26 AM UTC
We have now contacted the impacted customers directly to confirm that the refund for the duplicate transaction is underway and to provide more information on the issue.
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resolved Feb 20, 2026, 03:56 PM UTC
Our finance team has contacted customers who were impacted, and refunds have been arranged directly.
Read the full incident report →
- Detected by Pingoru
- Dec 05, 2025, 09:13 AM UTC
- Resolved
- Dec 05, 2025, 09:48 AM UTC
- Duration
- 35m
Timeline · 2 updates
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investigating Dec 05, 2025, 09:13 AM UTC
We are currently aware of an issue preventing customers from accessing our support portal. The issue appears to be potentially caused by an ongoing issue within Cloudflare that is impacting a large collection of services and sites. Signatures are continuing to be applied to messages, and access to our portal is working as expected. We're continuing to monitor for any changes at this time.
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resolved Dec 05, 2025, 09:48 AM UTC
After a monitoring period to confirm there are no returning issues. We can confirm that Cloudflare has implemented a fix to resolve the issue, and we have confirmed that the support portal can be accessed as expected
Read the full incident report →
- Detected by Pingoru
- Nov 18, 2025, 11:52 AM UTC
- Resolved
- Nov 18, 2025, 06:11 PM UTC
- Duration
- 6h 18m
Affected: UK: UI: Admin User InterfaceAU: UI: Admin User InterfaceUI: Admin User InterfaceUAE: UI: Admin User InterfaceDE: UI: Admin User InterfaceUS: UI: Admin User Interface
Timeline · 8 updates
Read the full incident report →
- Detected by Pingoru
- Nov 14, 2025, 12:22 PM UTC
- Resolved
- Nov 14, 2025, 04:24 PM UTC
- Duration
- 4h 2m
Affected: US: Data: User SynchronizationUS: UI: New Customer Onboarding
Timeline · 5 updates
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identified Nov 14, 2025, 12:22 PM UTC
Exclaimer Engineers are engaged in an issue with some storage components in US that are being impacted by a resource availability shortage in the east us Azure Datacenter. Currently, customers onboarding or running on-demand data crawls will notice a delay in this data being collected. Exclaimer Engineers are engaged with Microsoft to mitigate the capacity issues and return the system to normal. Customer mailflow is not impacted. Next update within 60 minutes or sooner
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identified Nov 14, 2025, 01:27 PM UTC
Exclaimer Engineers are continuing to work with Microsoft on resolving the issues with the storage components affecting onboarding and aggregation in the US. Microsoft is prioritising our request to make the adjustments required available to us so that we can restore operations fully. Next update to follow in 60 minutes
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identified Nov 14, 2025, 02:36 PM UTC
We are continuing to work with Engineers at Microsoft who have confirmed that mitigative steps required to resolve the issues affecting our storage components in East US which is currently resource constrained has been approved. As soon as this the allocation is complete, Exclaimer Engineers will be able to proceed with the steps required to fully restore User Data Synchronization and Onboarding services. Any customers that have attempted to synchronize their data will catch up once this has been completed as the operation is queued internally within Exclaimer's systems. Next update to follow in 60 minutes
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identified Nov 14, 2025, 03:37 PM UTC
Microsoft have completed the mitigative steps that were affecting our storage components in East US and the affected storage is healthy once again. Exclaimer Engineers are now resyncing the data to the affected storage instances. This will take some time as we are partially limited by the capacity contraints ongoing in the East US Azure datacenter. Once complete, the User Data Synchronization and Onboarding services will be re-enabled and any customer aggregations that have been queued during this time will complete. Next update to follow in 90 minutes or sooner.
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resolved Nov 14, 2025, 04:24 PM UTC
The data has been fully resynced to the affected instances, the User Data Synchronization and Onboarding services have been re-enabled and all pending customer aggregations that were queued during this time have completed. Exclaimer Engineers will continue to monitor the health of the service and the impact to customers has been resolved.
Read the full incident report →
