# Delivery Delays – Emails to Microsoft Hosted Domains And Others Held as “Processed”

- Provider: [SMTP2GO](https://down.guide/smtp2go)
- Level: confirmed
- Impact: Degraded
- lasted 11h 43m
- started 2026-09-04 08:58 UTC
- Email sending (SMTP service)
- id: DWN-399e7f8d55
- Official page: https://stspg.io/tr52l0kbspgh

## Updates from SMTP2GO
### 2026-09-04 08:58 UTC: investigating
Our team is currently investigating an issue causing some emails to remain in the “Processed” state to Microsoft email addresses, resulting in delivery delays and greylisting. We are working to resolve the issue.
We recommend safelisting wherever possible: https://support.smtp2go.com/hc/en-gb/articles/360000471954-Allowlisting-IP-Addresses-With-Microsoft-365

### 2026-09-04 11:17 UTC: identified
While we continue to handle the ongoing issue with Microsoft domains, all indicators point to a larger, global issue with Microsoft itself. We will continue providing updates as they are available. 
https://groups.io/email-provider-status?isp=Microsoft+365

### 2026-09-04 12:04 UTC: identified
Microsoft has accepted responsibility for the current email delays. More details can be found on their status page and below:
Issue ID: EX1467029
Affected services: Exchange Online
Status: Service degradation
Issue type: Incident
Start time: Sep 4, 2026, 10:19 PM GMT+12
User impact
Users may experience a delay in sending and receiving email messages from external domains in Exchange Online.
More info
Users may experience intermittent “Server busy” errors, affecting multiple mailboxes.
Scope of impact
This issue impacts users who may be attempting to send and receive email messages from external domains in Exchange Online. This information may be updated as our investigation continues.

### 2026-09-04 14:04 UTC: identified
We are investigating as this issue has now started affecting other providers, like Gmail

### 2026-09-04 14:26 UTC: investigating
Our technical team is investigating an issue with some messages to various providers being shown as "Processed" and not reaching the recipient

### 2026-09-04 14:38 UTC: monitoring
Excess server burden caused by knock on effects from the Microsoft service issue caused abnormal outbound queues.
A fix has been implemented and we are monitoring server queues

### 2026-09-04 20:41 UTC: resolved
This incident has been resolved and mail queues have returned to normal.
Thank you for your patience.

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