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Microsoft mishandling example.com
TL;DR: Since at least February 2020, Microsoft's Autodiscover service has incorrectly routed the IANA-reserved example.com to Sumitomo Electric Industries' mail servers at sei.co.jp , potentially sending test credentials there.
- Points
- 249
- HN comments
- 89
- Submissions
- 1
- Cited by
- 0 commenters
Networking & InternetSecurity & Privacy2026
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Jan 23, 2026 | Microsoft mishandling example.com by mrled | 249 | 89 |
