# Front: Critical incident: Errors sending and receiving mail for [Office365] channels

**Summary:** Front reported a critical outage causing errors sending and receiving email for Office365 channels, starting 2025-03-14 21:49 UTC and resolved 2025-03-15 00:28 UTC, lasting 2 h 39 min. Front deployed a fix and monitored service before confirming resolution; no specific cause was disclosed. _(machine-written, sol)_
- Kind: Major incident · Label: outage (model (Jev))
- Changed: 2025-03-14 21:49 UTC · Detected: 2026-10-17 18:22 UTC
- [Source: https://stspg.io/822pt5tkx5zx](https://stspg.io/822pt5tkx5zx)
- [Company: Front](https://rewindex.com/company/front.md)
- Versions: before (none: first archived) → after incident\_version:328/fsglp3drc36r@b9743ee84abd
- Change 1 of 1 for this incident

## What changed

**1. Added: Title**

```diff
+ Errors sending and receiving mail for [Office365] channels
```

**2. Added: Impact**

```diff
+ critical
```

**3. Added: Status**

```diff
+ resolved
```

**4. Added: Start time**

```diff
+ 2025-03-14 21:49 UTC
```

**5. Added: Resolved time**

```diff
+ 2025-03-15 00:28 UTC
```

**6. Added: Affected components**

```diff
+ O365
```

**7. Added: Update** (investigating) · 2025-03-14 21:49 UTC

```diff
+ We are currently investigating errors sending and receiving email for Office365 channels
```

**8. Added: Update** (identified) · 2025-03-14 21:51 UTC

```diff
+ We have identified the issue causing errors when sending and receiving mail for Office365 channels and are working towards a resolution.
```

**9. Added: Update** (identified) · 2025-03-14 21:59 UTC

```diff
+ We are currently deploying a fix for this issue and expect to restore service within 30 minutes
```

**10. Added: Update** (monitoring) · 2025-03-14 22:17 UTC

```diff
+ We have deployed a fix and are monitoring the situation.
```

**11. Added: Update** (resolved) · 2025-03-15 00:28 UTC

```diff
+ This incident has been resolved.
```

## History of this incident

| When (UTC) | Change | Label |
| --- | --- | --- |
| 2025-03-14 21:49 UTC | Critical incident: Errors sending and receiving mail for \[Office365\] channels (this change) | outage |

All Front changes: [timeline](https://rewindex.com/company/front/changes.md)
_Diff excerpts are shown on normalized text: dates, counters and tokens appear as ‹date›, ‹count›, ‹tok›; noise-only edits are hidden. Rewindex shows the changed passages, not a copy of the page._


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Canonical: https://rewindex.com/change/i815e2f64620c7a · Markdown: https://rewindex.com/change/i815e2f64620c7a.md · JSON: https://rewindex.com/api/v1/changes/i815e2f64620c7a · Generated 2026-10-18T02:29:13.116Z