Paubox Outage History
Paubox is up right nowPingoru has recorded 51 incidents for Paubox: 19 in the last 12 months and 3 in the last 90 days.
Show as a table
| Month | Incidents | Hours with an open incident |
|---|---|---|
| April 2026 | 2 | 10 of 720 (1%) |
| May 2026 | 1 | 27 of 744 (4%) |
| June 2026 | 2 | 5 of 720 (1%) |
| July 2026 | 2 | 1 of 744 (0%) |
| August 2026 | 1 | 1 of 744 (0%) |
| September 2026 | 1 | 3 of 720 (0%) |
| October 2026 | 1 | 1 of 510 (0%) |
Incidents, newest first
Minor October 21, 2026 Customers reporting issue with MFA codes 49m Paubox Dashboard
Started Oct 21, 2026, 03:36 PM UTC· resolved Oct 21, 2026, 04:26 PM UTC
- investigating Oct 21, 2026, 03:36 PM UTC
We are investigating an issue where MFA codes are not being received.
- identified Oct 21, 2026, 03:52 PM UTC
We have identified the issue and are working on a fix. Both TOTP (authenticator apps) and passkey options are functional as we pursue this.
- resolved Oct 21, 2026, 04:26 PM UTC
Roughly 133 codes got stuck in our internal queues - they have been released and the MFA service is now functioning as expected. The back end is being rewritten this quarter to ensure the issue cannot reoccur.
Minor September 21, 2026 Dashboard data display issues affecting some Outbound and Marketing customers 3h 6m Paubox Dashboard
Started Sep 21, 2026, 09:17 PM UTC· resolved Sep 22, 2026, 12:23 AM UTC
- monitoring Sep 21, 2026, 09:17 PM UTC
Some Outbound and Marketing customers may see incomplete or missing information in the Mail Log and Paubox Marketing areas of the dashboard, and Marketing pages may be slow to load or time out. Email delivery is not affected. Messages are being sent, received, filtered and encrypted normally throughout. No customer data has been lost — this affects only how recent activity is displayed. We have identified the cause of the Mail Log issue and have a fix in place. We are still investigating the Marketing issue. We will update this page as we have more.
- resolved Sep 22, 2026, 12:23 AM UTC
Display issues with Outbound Email and Marketing have been resolved.
Minor August 14, 2026 Users cannot log in to the Paubox Admin App/Paubox Dashboard 29m Paubox Dashboard
Started Aug 14, 2026, 07:36 PM UTC· resolved Aug 14, 2026, 08:06 PM UTC
- identified Aug 14, 2026, 07:36 PM UTC
We have identified an issue blocking log in to our admin app and should have a fix in place shortly.
- monitoring Aug 14, 2026, 07:48 PM UTC
A fix has been implemented and we are monitoring the results - log in is confirmed functional again.
- resolved Aug 14, 2026, 08:06 PM UTC
The incident has been resolved.
Notice July 22, 2026 Some Inbound customers report blank Inbound quarantines 58m Inbound Security
Started Jul 22, 2026, 08:08 PM UTC· resolved Jul 22, 2026, 09:06 PM UTC
- investigating Jul 22, 2026, 08:08 PM UTC
We are investigating reports from some Inbound Security customers that their Inbound quarantines are blank despite mail being marked as quarantined in their mail logs.
- resolved Jul 22, 2026, 09:06 PM UTC
No defect was identified, no changes were shipped. Two reasons customers may have encountered this: 1) Paubox is shipping improvements almost daily - if something is suddenly unavailable, you may need to log out/back in to refresh your access 2) In order for the Inbound quarantine to display results, "all categories" or at least one category must be selected. If no categories are selected, the page will show no results.
Minor July 8, 2026 Reports of intermittent inbound mail delays 14m Inbound Security
Started Jul 08, 2026, 07:07 PM UTC· resolved Jul 08, 2026, 07:22 PM UTC
- investigating Jul 08, 2026, 07:07 PM UTC
We are currently investigating this issue.
- resolved Jul 08, 2026, 07:22 PM UTC
This incident has been resolved.
Minor June 25, 2026 Quarantine release non functional for inbound security customers 2h 41m Inbound Security
Started Jun 25, 2026, 03:23 PM UTC· resolved Jun 25, 2026, 06:04 PM UTC
- identified Jun 25, 2026, 03:23 PM UTC
Customers are reporting inbound security quarantine release is non functional - a fix is in progress.
- monitoring Jun 25, 2026, 05:11 PM UTC
A fix is in place and we are monitoring results.
- resolved Jun 25, 2026, 06:04 PM UTC
This incident has been resolved.
Minor June 17, 2026 Microsoft certificate rotation causing higher than average secure message conversion for some outbound customers 1h 46m Outbound Security
Started Jun 17, 2026, 04:33 PM UTC· resolved Jun 17, 2026, 06:20 PM UTC
- identified Jun 17, 2026, 04:33 PM UTC
Beginning at 6AM UTC today, Microsoft began presenting an updated certificate on some of their hosted mail accounts, and our outbound servers' list of trusted authorities doesn't yet include the new one. As a result, a portion of outbound emails to recipients hosted on Microsoft 365 are currently being routed through the Paubox Secure Message Center instead of delivered directly to the recipient's inbox. Affected recipients receive a notification with a secure link to view the message in our portal. No emails have been lost and no data security has been compromised — the Secure Message Center fallback is operating as designed to protect message content when direct delivery cannot be verified. We are updating the certificate and should have a resolution shortly.
- monitoring Jun 17, 2026, 05:00 PM UTC
We are rolling out a new cert server by server and monitoring.
- resolved Jun 17, 2026, 06:20 PM UTC
Direct delivery to Microsoft 365 recipients has been restored. Messages sent during the incident were delivered securely via the Paubox Secure Message Center; no mail was lost. Thank you for your patience.
Notice May 12, 2026 Some hosted/webmail customers report certificate errors blocking mobile log in 1d 3h Hosted Mail
Started May 12, 2026, 07:52 PM UTC· resolved May 13, 2026, 11:02 PM UTC
- monitoring May 12, 2026, 07:52 PM UTC
Some customers using our hosted/webmail reported certificate issues blocking access on mobile devices. We have refreshed our certificates again - if you are still seeing an error, please clear your cookies and cache. If this does not resolve your issue, take a screenshot and email [email protected] so we can isolate your specific issue.
- resolved May 13, 2026, 11:02 PM UTC
This incident has been resolved.
Minor April 8, 2026 Some Google Workspace customers report inbound & outbound delays on internal emails 8h 1m Inbound Security
Started Apr 08, 2026, 03:32 PM UTC· resolved Apr 08, 2026, 11:34 PM UTC
- monitoring Apr 08, 2026, 03:32 PM UTC
We have had a few calls from some Google Workspace customers report inbound & outbound delays on internal emails which Down Dectector corroborates - see https://downdetector.com/status/gmail/ - we will continue to monitor this.
- monitoring Apr 08, 2026, 05:56 PM UTC
Google has updated this site with more details: https://support.cloud.google.com/portal/system-status?product=WORKSPACE&cssp=true We will continue to monitor.
- monitoring Apr 08, 2026, 08:52 PM UTC
Google has published this https://www.google.com/appsstatus/dashboard/incidents/224ozRqzW4sFBDK8hLnT We continue to monitor.
- monitoring Apr 08, 2026, 09:54 PM UTC
Google has been releasing backed up mail - we expect resolution by 3pm PDT (their resolution estimate).
- resolved Apr 08, 2026, 11:34 PM UTC
Google has marked this issue resolved.
Minor April 7, 2026 Outbound delays for Hosted mail & SMTP server solution customers 1h 30m Hosted Mail
Started Apr 07, 2026, 10:49 PM UTC· resolved Apr 08, 2026, 12:20 AM UTC
- investigating Apr 07, 2026, 10:49 PM UTC
We are currently investigating outbound delays for Hosted mail & SMTP server solution customers. We have not observed issues for any other outbound customers at present.
- identified Apr 07, 2026, 11:06 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Apr 07, 2026, 11:54 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Apr 08, 2026, 12:20 AM UTC
Queues have recovered and delays as resolved.
Minor March 29, 2026 Inbound mail delays reported 1h 27m Inbound Security
Started Mar 29, 2026, 09:05 PM UTC· resolved Mar 29, 2026, 10:32 PM UTC
- investigating Mar 29, 2026, 09:05 PM UTC
We are currently investigating inbound mail delays.
- identified Mar 29, 2026, 09:18 PM UTC
We have identified a database issue and are implementing a fix.
- monitoring Mar 29, 2026, 09:35 PM UTC
A fix is in place and we are monitoring results.
- monitoring Mar 29, 2026, 10:09 PM UTC
We are continuing to monitor - the deferred mail queue has dropped ~60% from the highest spike and new mail is flowing. We anticipate full resolution within the hour.
- resolved Mar 29, 2026, 10:32 PM UTC
Inbound queues are healthy again. We'll complete an internal post mortem tomorrow and have an RCA available upon request.
Minor March 18, 2026 Hosted/webmail customers reporting incorrect statuses 3h 5m Hosted Mail
Started Mar 18, 2026, 07:43 PM UTC· resolved Mar 18, 2026, 10:48 PM UTC
- investigating Mar 18, 2026, 07:43 PM UTC
Customers using our hosted/webmail platform and smtp server solution have reported all their mail in logs is marked as queued. We are investigating.
- identified Mar 18, 2026, 07:49 PM UTC
We have identified the cause and are implementing a fix.
- monitoring Mar 18, 2026, 08:23 PM UTC
A fix has been implemented and we are monitoring results.
- resolved Mar 18, 2026, 10:48 PM UTC
We observed status updates universally, but we discovered 2 customers still experiencing too many "queued" emails. Because the larger issue is resolved, we'll close this incident - but we are working on a fix and will communicate directly with the affected parties.
Minor March 18, 2026 Outbound email customers reporting delays 1h 20m Outbound Security
Started Mar 18, 2026, 03:08 PM UTC· resolved Mar 18, 2026, 04:29 PM UTC
- investigating Mar 18, 2026, 03:08 PM UTC
Outbound email customers are reporting delays in excess of 10 minutes. We are investigating.
- identified Mar 18, 2026, 03:19 PM UTC
The issue has been identified and a fix is in progress.
- monitoring Mar 18, 2026, 03:47 PM UTC
A fix has been implemented and we are monitoring results - current email testing is coming in under 5 minutes.
- resolved Mar 18, 2026, 04:29 PM UTC
This incident has been resolved. Queues have returned to normal and delayed mail is being delivered.
Minor March 3, 2026 Users unable to authenticate MFA codes 1h 24m Paubox Dashboard
Started Mar 03, 2026, 10:40 PM UTC· resolved Mar 04, 2026, 12:05 AM UTC
- investigating Mar 03, 2026, 10:40 PM UTC
We are investigating why users are unable to verify MFA codes and begin fresh sessions in our admin app. If you are already logged in, you can navigate as usual.
- identified Mar 03, 2026, 11:17 PM UTC
The issue has been isolated and a fix is in progress.
- monitoring Mar 03, 2026, 11:40 PM UTC
A fix has been implemented & we are monitoring results.
- resolved Mar 04, 2026, 12:05 AM UTC
The issue has been resolved.
Notice February 25, 2026 Intermittent delivery delay affecting customers emailing hotmail.com & outlook.com 21h 13m Outbound Security
Started Feb 25, 2026, 10:25 PM UTC· resolved Feb 26, 2026, 07:38 PM UTC
- monitoring Feb 25, 2026, 10:25 PM UTC
We are observing intermittent delivery delays affecting a limited subset of outbound messages to certain external domains (including hotmail.com and outlook.com). Our systems remain fully operational. We are actively monitoring and adjusting sending patterns as needed.
- resolved Feb 26, 2026, 07:38 PM UTC
We are no longer observing intermittent delays - all mail that was deferred yesterday has been delivered.
Notice February 23, 2026 Inbound customers report delay in quarantine logging 8h 31m Inbound Security
Started Feb 23, 2026, 05:45 PM UTC· resolved Feb 24, 2026, 02:17 AM UTC
- identified Feb 23, 2026, 05:45 PM UTC
Inbound email customers have reported a delay in their quarantine log propagation. Emails are marked quarantine in their mail log, but do not appear in quarantine until hours later. There is no mail flow or data loss issue, but we have identified a problem with timestamps and are working to correct it.
- monitoring Feb 23, 2026, 09:56 PM UTC
We have shipped a correction and are monitoring the results.
- resolved Feb 24, 2026, 02:17 AM UTC
This incident has been resolved.
Notice January 22, 2026 Microsoft outage 17h 58m
Started Jan 22, 2026, 08:20 PM UTC· resolved Jan 23, 2026, 02:19 PM UTC
- identified Jan 22, 2026, 08:20 PM UTC
Microsoft365 outage reported on the Microsoft Service Health Status page
- resolved Jan 23, 2026, 02:19 PM UTC
This incident has been resolved. Microsoft Service Health Status - https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect
Minor December 3, 2025 Some customers report outbound mail delays 11h Outbound Security
Started Dec 03, 2025, 05:07 PM UTC· resolved Dec 04, 2025, 04:08 AM UTC
- investigating Dec 03, 2025, 05:07 PM UTC
Some customers report outbound mail delays in excess of 10 min - we are investigating
- identified Dec 03, 2025, 05:17 PM UTC
We have identified the issue and are working on a fix.
- identified Dec 03, 2025, 07:30 PM UTC
We're continuing to work on the fix for this issue.
- monitoring Dec 03, 2025, 08:45 PM UTC
A fix is in place a new mail is flowing normally - we expect another 3-4 hours for the deferred queue to unspool. We'll continue to monitor and update you if anything changes.
- investigating Dec 03, 2025, 10:13 PM UTC
Customers are reporting missing outbound mail log data - we are investigating.
- monitoring Dec 03, 2025, 11:27 PM UTC
Mail log data has been restored. We are continuing to monitor the deferred queue while it processes the backlog.
- resolved Dec 04, 2025, 04:08 AM UTC
The deferral queue has cleared and outbound is functioning normally.
Minor November 28, 2025 Some customers reporting deferrals from Yahoo & affiliates 7d 8h Outbound Security
Started Nov 28, 2025, 06:11 PM UTC· resolved Dec 06, 2025, 02:17 AM UTC
- monitoring Nov 28, 2025, 06:11 PM UTC
Some customers are reporting outbound deferrals from Yahoo & affiliates - we are keeping an eye on this.
- monitoring Dec 04, 2025, 04:08 AM UTC
We are continuing to monitor reports of Yahoo deferrals independent of today's incident.
- resolved Dec 06, 2025, 02:17 AM UTC
Email to yahoo.com and affiliates (aol.com, verizon.net, att.net, sbcglobal.net, cox.net, etc) is delivering as normal.
Minor September 29, 2025 Some Email API customers reporting HTTP response timeouts 2h 40m REST API
Started Sep 29, 2025, 07:37 PM UTC· resolved Sep 29, 2025, 10:18 PM UTC
- investigating Sep 29, 2025, 07:37 PM UTC
We are investigating reports of HTTP response timeouts on Email API.
- identified Sep 29, 2025, 08:25 PM UTC
We have identified the issue and are working on a fix.
- monitoring Sep 29, 2025, 09:24 PM UTC
We have implemented a fix and are monitoring the results.
- resolved Sep 29, 2025, 10:18 PM UTC
We have been unable to recreate timeout errors post update.
Minor September 18, 2025 Intermittent inbound mail delays 3h 20m Inbound Security
Started Sep 18, 2025, 01:32 AM UTC· resolved Sep 18, 2025, 04:52 AM UTC
- investigating Sep 18, 2025, 01:32 AM UTC
We're currently investigating delays for some inbound mail. Customers viewing their Paubox dashboard's Inbound Security Mail Log may see a mix of emails with "Delivered" status and "No Delivery Status Found".
- identified Sep 18, 2025, 04:02 AM UTC
The issue has been identified and a fix is being implemented.
- monitoring Sep 18, 2025, 04:30 AM UTC
A fix has been implemented and we are monitoring the results.
- resolved Sep 18, 2025, 04:52 AM UTC
This incident is now resolved. Any mail that was delayed has been delivered or is delivering now. Where applicable, a new Inbound Security Mail Log entry with "Delivered" status was created. Please disregard older, duplicate "No Delivery Status Found" mail log entries for the same email due to this issue.
Minor September 9, 2025 Some customers reporting inbound mail deferrals 1d 1h Inbound Security
Started Sep 09, 2025, 06:18 PM UTC· resolved Sep 10, 2025, 07:23 PM UTC
- identified Sep 09, 2025, 06:18 PM UTC
Some inbound customers are reporting delays and deferrals on receiving mail. We have identified the cause and are working on a resolution.
- monitoring Sep 09, 2025, 10:21 PM UTC
A fix has been shipped and we are monitoring results.
- monitoring Sep 10, 2025, 03:06 PM UTC
while we released a fix last night, some customers continue to report missing mail log statuses from Monday 9/8 to Tuesday 9/9 - we are still reviewing these reports
- resolved Sep 10, 2025, 07:23 PM UTC
After thorough investigation we found: - A new log entry was added each time a piece of mail was deferred - “No Delivery Status Found” mail log rows didn’t get updated when the email was later delivered - Instead, a brand new mail log entry with the “Delivered” status was written
Notice September 8, 2025 Inbound mail delays 2h 58m Inbound Security
Started Sep 08, 2025, 01:18 PM UTC· resolved Sep 08, 2025, 04:17 PM UTC
- investigating Sep 08, 2025, 01:18 PM UTC
We are currently investigating this issue.
- identified Sep 08, 2025, 02:03 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Sep 08, 2025, 03:07 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Sep 08, 2025, 04:17 PM UTC
This incident has been resolved. Missing delivery statuses should be updated before the end of the day
Major August 21, 2025 Delivery Delays 1h 5m Outbound Security
Started Aug 21, 2025, 11:36 PM UTC· resolved Aug 22, 2025, 12:42 AM UTC
- investigating Aug 21, 2025, 11:36 PM UTC
We are currently experiencing delays with outbound delivery. Our engineering team is investigating the issue.
- identified Aug 21, 2025, 11:54 PM UTC
The issue has been identified and a fix is being implemented.
- monitoring Aug 21, 2025, 11:54 PM UTC
A fix has been implemented and we are monitoring the results.
- resolved Aug 22, 2025, 12:42 AM UTC
This incident has been resolved.
Minor August 2, 2025 Intermittent inbound & outbound email delays –
Started Aug 02, 2025, 03:00 PM UTC· resolved Aug 02, 2025, 03:00 PM UTC
- resolved Aug 06, 2025, 08:23 PM UTC
Some customers reported mail delays on Saturday August 2nd. We restarted the service causing the delay and the mail queues cleared immediately. Some customers reported lingering mail status inaccuracies, but these were cleared up by Monday August 4th.