Mesh Security Outage History
Mesh Security is up right nowPingoru has recorded 50 incidents for Mesh Security: 19 in the last 12 months and 2 in the last 90 days.
Show as a table
| Month | Incidents | Hours with an open incident |
|---|---|---|
| April 2026 | 2 | 1 of 720 (0%) |
| May 2026 | 5 | 6 of 744 (1%) |
| June 2026 | 0 | 0 of 720 (0%) |
| July 2026 | 2 | 5 of 744 (1%) |
| August 2026 | 0 | 0 of 744 (0%) |
| September 2026 | 1 | 5 of 720 (1%) |
| October 2026 | 1 | 6 of 744 (1%) |
| November 2026 | 0 | 0 of 121 (0%) |
Incidents, newest first
Minor October 25, 2026 [US] Inbound Delivery Issues 5h 53m Inbound Email Security
Started Oct 25, 2026, 01:26 PM UTC· resolved Oct 25, 2026, 07:20 PM UTC
- investigating Oct 25, 2026, 01:26 PM UTC
Our team is currently investigating some inbound delivery issues on our US infrastructure
- monitoring Oct 25, 2026, 02:16 PM UTC
The team has implemented a fix and is currently monitoring performance. Thank you for your patience.
- resolved Oct 25, 2026, 07:20 PM UTC
The team has monitored for a few hours and changes have remained stable.
Minor September 4, 2026 Slow Delivery Inbound to Office 365 5h 3m Inbound Email Security, Outbound Email Security
Started Sep 04, 2026, 10:09 AM UTC· resolved Sep 04, 2026, 03:12 PM UTC
- investigating Sep 04, 2026, 10:09 AM UTC
We're seeing slower delivery into O365 for Mesh customers. We're currently investigating.
- investigating Sep 04, 2026, 10:37 AM UTC
Outbound Relay also appears to be affected. Only for traffic going to Office 365
- identified Sep 04, 2026, 11:12 AM UTC
This appears to be related to an ongoing issue on Microsoft 365s infrastructure. It can be tracked via the below link. https://admin.cloud.microsoft/?#/servicehealth/:/alerts/EX1467029
- monitoring Sep 04, 2026, 01:00 PM UTC
We're beginning to see improvements with delivery into Microsoft 365's infrastructure. We are still seeing some messages being given a deferral by them. They have acknowledged the issue publicly and that they are applying mitigations. We'll continue to monitor and post updates. https://x.com/MSFT365Status
- resolved Sep 04, 2026, 03:12 PM UTC
We're no longer observing live deferred events. We're continuing to monitor the situation.
Minor July 29, 2026 [EU] Login Error 2h 54m MSP Hub
Started Jul 29, 2026, 10:05 AM UTC· resolved Jul 29, 2026, 01:00 PM UTC
- investigating Jul 29, 2026, 10:05 AM UTC
Some partners have reported an error when attempting to login. Our development team is investigating and we will provide an update as soon as possible.
- resolved Jul 29, 2026, 01:00 PM UTC
Our development pushed a hotfix to production and login is now functioning as intended.
Minor July 24, 2026 Slow Portal Performance & Email Delivery [EU] 1h 43m Inbound Email Security, MSP Hub
Started Jul 24, 2026, 09:19 AM UTC· resolved Jul 24, 2026, 11:03 AM UTC
- investigating Jul 24, 2026, 09:19 AM UTC
We are investigating slow performance of the portal on our EU service. Email processing is not impacted.
- investigating Jul 24, 2026, 09:29 AM UTC
We have identified performance issues on our mail servers which is impacting email delivery. The team is investigating the root cause and we will provide an update as soon as possible.
- monitoring Jul 24, 2026, 09:58 AM UTC
We have implemented a fix and are currently monitoring performance. Email is now flowing, however, emails received during the performance degradation window may have received a 450 rejection message. This 450 code informs senders to temporarily back off and retry delivery at a later time. As a result, there may be delay receiving certain emails. Please note that the time frame for a retry is decided by the sender's infrastructure and is not controlled by Mesh.
- resolved Jul 24, 2026, 11:03 AM UTC
Changes have remained stable and email latency is normal. Thank you for your patience.
Minor May 29, 2026 [US Infrastructure] Slow Email Delivery 44m Inbound Email Security
Started May 29, 2026, 03:01 PM UTC· resolved May 29, 2026, 03:46 PM UTC
- identified May 29, 2026, 03:01 PM UTC
We are aware of some inbound emails delivery delays on our US infrastructure. Our team is investigating.
- resolved May 29, 2026, 03:46 PM UTC
Email queues have cleared and latency has returned to normal. Thank you for your patience.
Minor May 28, 2026 [US Infrastructure] Slow Email Delivery 2h 22m Inbound Email Security
Started May 28, 2026, 04:05 PM UTC· resolved May 28, 2026, 06:27 PM UTC
- identified May 28, 2026, 04:05 PM UTC
We are aware of some inbound emails delivery delays on our US infrastructure. Our team is investigating and we will provide an update as soon as possible.
- resolved May 28, 2026, 06:27 PM UTC
Email queues have cleared and latency has returned to normal. Thank you for your patience.
Minor May 27, 2026 [EU Outbound] Slow Email Delivery 39m Outbound Email Security
Started May 27, 2026, 09:42 AM UTC· resolved May 27, 2026, 10:21 AM UTC
- investigating May 27, 2026, 09:42 AM UTC
We have identified email delays on our outbound EU infrastructure. Inbound delivery is not impacted. We will provide a status update as soon as possible.
- resolved May 27, 2026, 10:21 AM UTC
Queues have cleared and latency has returned to normal. Thank you for your patience.
Minor May 26, 2026 [US Infrastructure] Emails slow to process 57m Inbound Email Security
Started May 26, 2026, 03:01 PM UTC· resolved May 26, 2026, 03:59 PM UTC
- identified May 26, 2026, 03:01 PM UTC
We have identified minor email delays on our US infrastructure. We will provide a status update as soon as possible.
- resolved May 26, 2026, 03:59 PM UTC
Email processing times have returned to normal and queues have cleared. Thank you for your patience.
Minor May 21, 2026 Emails slow to process - EU 49m Inbound Email Security
Started May 21, 2026, 09:32 AM UTC· resolved May 21, 2026, 10:22 AM UTC
- identified May 21, 2026, 09:32 AM UTC
We are currently investigating short email delays. We will post an update as soon as possible.
- resolved May 21, 2026, 10:22 AM UTC
Queue times have returned to normal. Thank you for your patience.
Notice April 24, 2026 Detection Engine Issue 1h 29m Inbound Email Security, Inbound Email Security
Started Apr 24, 2026, 07:48 PM UTC· resolved Apr 24, 2026, 09:18 PM UTC
- investigating Apr 24, 2026, 07:48 PM UTC
We are currently investigating an issue impacting our detection engine which is resulting in some emails incorrectly receiving a phishing verdict.
- monitoring Apr 24, 2026, 08:35 PM UTC
A fix has been implemented and we are monitoring.
- resolved Apr 24, 2026, 09:18 PM UTC
The issue has been fixed as of 3pm Eastern Time. Unfortunately, we do not have a mechanism to automatically release those emails that were incorrectly given a phishing verdict. Thank you for your patience while we worked through this.
Minor April 23, 2026 Slow Email Delivery - Inbound US 1h 13m Inbound Email Security
Started Apr 23, 2026, 03:44 PM UTC· resolved Apr 23, 2026, 04:57 PM UTC
- investigating Apr 23, 2026, 03:44 PM UTC
We are currently investigating some inbound delivery queues on our US infrastructure. We will provide an update as soon as possible.
- monitoring Apr 23, 2026, 04:18 PM UTC
Queue volume is dropping steadily and the infrastructure team is monitoring performance.
- resolved Apr 23, 2026, 04:57 PM UTC
Inbound queues have cleared and delivery times have returned to normal. Thank you for your patience.
Minor March 25, 2026 Email Delays Inbound - EU 3h 7m Inbound Email Security
Started Mar 25, 2026, 08:48 AM UTC· resolved Mar 25, 2026, 11:56 AM UTC
- investigating Mar 25, 2026, 08:48 AM UTC
We are currently investigating this issue.
- identified Mar 25, 2026, 09:03 AM UTC
We have identified the issue and a fix has been implemented.
- monitoring Mar 25, 2026, 10:34 AM UTC
A fix has been implemented and we are monitoring the results.
- resolved Mar 25, 2026, 11:56 AM UTC
Queue times have returned to normal. We're continuing to monitor.
Minor March 24, 2026 Slow Email Delivery - Inbound EU 1h 38m Inbound Email Security
Started Mar 24, 2026, 09:47 AM UTC· resolved Mar 24, 2026, 11:26 AM UTC
- investigating Mar 24, 2026, 09:47 AM UTC
We are currently investigating some inbound delivery queues on our EU infrastructure.
- identified Mar 24, 2026, 10:30 AM UTC
The team has identified the root cause and is working on a fix.
- resolved Mar 24, 2026, 11:26 AM UTC
Message processing has returned to normal and all queues have cleared. We will continue to monitor.
Minor March 23, 2026 Slow Email Delivery - Inbound EU 54m Inbound Email Security
Started Mar 23, 2026, 10:55 AM UTC· resolved Mar 23, 2026, 11:49 AM UTC
- investigating Mar 23, 2026, 10:55 AM UTC
We are currently investigating Delivery Queues on our EU infrastructure.
- identified Mar 23, 2026, 11:12 AM UTC
The issue has been identified and we're implementing a fix.
- monitoring Mar 23, 2026, 11:23 AM UTC
We're currently monitoring the changes. The queue is continuing to drop. We will post another update once cleared.
- resolved Mar 23, 2026, 11:49 AM UTC
Message processing has returned to normal and all queues have cleared.
Minor March 13, 2026 [EU] Email Processing Delays 39m Inbound Email Security, Outbound Email Security, MSP Hub
Started Mar 13, 2026, 10:07 AM UTC· resolved Mar 13, 2026, 10:47 AM UTC
- identified Mar 13, 2026, 10:07 AM UTC
The team has identified an issue causing some inbound email delivery delays. A fix is being deployed shortly.
- resolved Mar 13, 2026, 10:47 AM UTC
The issue has been resolved and email delivery has returned to normal.
Minor February 13, 2026 Email Processing Delays - US 1h 34m Inbound Email Security
Started Feb 13, 2026, 02:19 PM UTC· resolved Feb 13, 2026, 03:54 PM UTC
- investigating Feb 13, 2026, 02:19 PM UTC
Our infrastructure team has identified some email processing delays on our US service.
- monitoring Feb 13, 2026, 03:00 PM UTC
Queues have returned to normal and we are monitoring system stability.
- resolved Feb 13, 2026, 03:54 PM UTC
We are marking this incident as resolved but will continue to monitor closely.
Minor February 12, 2026 Email Processing Delays - US 53m Inbound Email Security
Started Feb 12, 2026, 09:08 PM UTC· resolved Feb 12, 2026, 10:02 PM UTC
- investigating Feb 12, 2026, 09:08 PM UTC
We are currently investigating delayed message processing on the API service
- identified Feb 12, 2026, 09:25 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Feb 12, 2026, 09:36 PM UTC
Mail Processing times have returned to normal. We're continuing to monitor.
- resolved Feb 12, 2026, 10:02 PM UTC
This incident has been resolved.
Minor January 27, 2026 Emails slow to process on Mesh 365 (US only) 1h 23m Inbound Email Security
Started Jan 27, 2026, 11:12 PM UTC· resolved Jan 28, 2026, 12:36 AM UTC
- investigating Jan 27, 2026, 11:12 PM UTC
We are currently investigating an issue where emails are slow to process on Mesh 365 on our US service. Mesh Gateway and Mesh Unified is not impacted.
- resolved Jan 28, 2026, 12:36 AM UTC
The issue has been addressed and mails are processing as normal on Mesh 365. We will continue to monitor. Thank you for your patience while we worked on this.
Minor January 22, 2026 Slow Message Delivery to Microsoft Services 18h 25m Inbound Email Security, Inbound Email Security, Outbound Email Security, Outbound Email Security
Started Jan 22, 2026, 08:10 PM UTC· resolved Jan 23, 2026, 02:36 PM UTC
- monitoring Jan 22, 2026, 08:10 PM UTC
We're currently monitoring a situation affecting message delivery to Microsoft Services. https://x.com/MSFT365Status/status/2014422298506285161
- monitoring Jan 22, 2026, 08:17 PM UTC
We're continuing to monitor the issue and will keep you abreast of any official developments. We recommend for our impacted customers to also follow. https://status.cloud.microsoft/m365/
- resolved Jan 23, 2026, 06:18 AM UTC
Microsoft are reporting the issue as largely resolved. Queues have returned to normal Outbound services but we're still processing a significant backlog Inbound on our US infrastructure. We will continue to monitor.
Minor October 31, 2025 Slow Mail Processing - US 4h Inbound Email Security
Started Oct 31, 2025, 01:38 PM UTC· resolved Oct 31, 2025, 05:39 PM UTC
- monitoring Oct 31, 2025, 01:38 PM UTC
We're observing slow mail processing on the US infrastructure.
- resolved Oct 31, 2025, 05:39 PM UTC
Mail processing queues have returned to normal. We're continuing to monitor our infrastructure. For now everything is operational. There is a maintenance window in Azure this evening which we believe will resolve the the underlying throughput issue within their Networks.
Minor October 30, 2025 Emails slow to process - US 3h 26m Inbound Email Security
Started Oct 30, 2025, 01:34 PM UTC· resolved Oct 30, 2025, 05:01 PM UTC
- monitoring Oct 30, 2025, 01:34 PM UTC
We're observing a recurrence of the issue on Azure whereby emails are slow to process on the US infrastructure. We're currently monitoring the situation and have reached out to Microsoft for a status update.
- resolved Oct 30, 2025, 05:01 PM UTC
Mail processing queues have returned to normal. We're continuing to monitor our infrastructure. For now everything is operational.
Notice October 29, 2025 Emails slow to process - US 7h 33m Inbound Email Security, Outbound Email Security, MSP Hub
Started Oct 29, 2025, 03:15 PM UTC· resolved Oct 29, 2025, 10:48 PM UTC
- investigating Oct 29, 2025, 03:15 PM UTC
We have observed some slow DNS lookups on our US infrastructure. This is causing some email delivery queues. The team is investigating and we will provide an update as soon as possible.
- identified Oct 29, 2025, 04:42 PM UTC
The team has linked these delays to an ongoing Azure issue. Details from Microsoft are limited at this time but we are monitoring the situation and continuing to investigate.
- resolved Oct 29, 2025, 10:48 PM UTC
Although Microsoft are still reporting issues here (https://azure.status.microsoft/en-us/status), our systems have been working as normal for the past few hours. We will continue to monitor.
Notice August 29, 2025 [EU] Microsoft Delivery Delays 2h 25m Inbound Email Security, Outbound Email Security, MSP Hub
Started Aug 29, 2025, 01:42 PM UTC· resolved Aug 29, 2025, 04:08 PM UTC
- monitoring Aug 29, 2025, 01:42 PM UTC
Microsoft is currently experiencing issues delivering emails to tenants within the EU. This is NOT a Mesh issue and this status is informational. Impacted emails will be temporarily deferred and we will continue to retry delivery. Microsoft Status: "We're investigating an issue in Europe where some users may experience delays when sending and receiving email messages. For more details, please look for EX1144276 in the admin center."
- monitoring Aug 29, 2025, 03:18 PM UTC
Our infrastructure team has been monitoring the situation. Inbound/outbound emails are being delivered more reliably and email queues are reducing in size. Latest update from Microsoft (EX1144276): "The new throttling rule has successfully been deployed. We’ve received confirmation from some of the previously affected users that they can now send and receive email. Additionally, our telemetry shows that the new throttling rule is having the desired effect and providing relief."
- resolved Aug 29, 2025, 04:08 PM UTC
Email traffic has returned to normal and Microsoft has marked the incident as resolved. Microsoft Status: "After monitoring the service and receiving confirmation from previously affected users, we’ve confirmed that impact has been remediated. The service will now resume periodic attempts to deliver emails that were sent during the impacted period."
Notice August 27, 2025 [EU/US] Outbound IP RBL Listing 19h 13m Outbound Email Security, Outbound Email Security
Started Aug 27, 2025, 01:40 PM UTC· resolved Aug 28, 2025, 08:54 AM UTC
- identified Aug 27, 2025, 01:40 PM UTC
We are aware that one of our outbound IP addresses was listed on Spamhaus' RBL. This IP has been removed from our sending relays and the team is actively working with Spamhaus to identify a root cause. At this time, we do not anticipate any ongoing impact to email delivery and we are closely monitoring for further reports. No action is required from end customers or partners.
- resolved Aug 28, 2025, 08:54 AM UTC
Our team has received further feedback from Spamhaus earlier this morning. The listings were caused by an end user emailing a spamtrap/honeypot operated by Spamhaus. The honeypot domain is a typosquat of a well known brand and the emails sent were not malicious traffic. We have reached out to the MSP so they can advise their end user of the mistake/typo.
Minor July 15, 2025 Emails slow to process - US 48m Inbound Email Security
Started Jul 15, 2025, 02:44 PM UTC· resolved Jul 15, 2025, 03:32 PM UTC
- identified Jul 15, 2025, 02:44 PM UTC
Our engineers have identified queues for inbound email on our US service. We are working on a fix.
- resolved Jul 15, 2025, 03:32 PM UTC
Queues have cleared and email processing has returned to normal.