Xink incident
US rerouting service - SpamHouse block resulting message delays or NDR.
Resolved after 1 hour 37 minutes, affecting Server-side (Re-routing), on November 3, 2025.
Due to SpamHouse (Microsoft's default spam service provider) blocking our US IP, between November 03, 2025 05:56:01 (UTC) and November 03, 2025 08:07:35, some of our clients with rerouting enabled received NDRs or were unable to send emails. Date Listed: November 03, 2025 05:56:01 (UTC) Date Removed: November 03, 2025 08:07:35 (UTC) One of our rerouting servers became overwhelmed with requests, resulting in delays for affected clients. We encourage clients to resend the affected email. Recommended Solution: Switch to the Xink 365 Add-in To avoid similar disruptions in the future, we strongly recommend switching to the Xink 365 Add-in, which does not rely on email routing or Spamhaus. With the add-in: ✅ No reliance on email servers – signatures are applied directly in Outlook before sending. ✅ No risk of email filtering issues – no interaction with external spam blacklists. ✅ Instant updates – signatures are applied automatically without waiting for mail flow rules. Most of our clients have already switched and eliminated email delivery risks altogether. Our team can assist with the transition to ensure a seamless experience. We strongly encourage you to consider the 365 Add-in for a more reliable and future-proof email signature solution.
Affected components
Update timeline
- monitoring Nov 03, 2025, 09:54 AM UTC
Due to SpamHouse (Microsoft's default spam service provider) blocking our US IP, between November 03, 2025 05:56:01 (UTC) and November 03, 2025 08:07:35, some of our clients with rerouting enabled received NDRs or were unable to send emails. Date Listed: November 03, 2025 05:56:01 (UTC) Date Removed: November 03, 2025 08:07:35 (UTC) One of our rerouting servers became overwhelmed with requests, resulting in delays for affected clients. We encourage clients to resend the affected email. Recommended Solution: Switch to the Xink 365 Add-in To avoid similar disruptions in the future, we strongly recommend switching to the Xink 365 Add-in, which does not rely on email routing or Spamhaus. With the add-in: ✅ No reliance on email servers – signatures are applied directly in Outlook before sending. ✅ No risk of email filtering issues – no interaction with external spam blacklists. ✅ Instant updates – signatures are applied automatically without waiting for mail flow rules. Most of our clients have already switched and eliminated email delivery risks altogether. Our team can assist with the transition to ensure a seamless experience. We strongly encourage you to consider the 365 Add-in for a more reliable and future-proof email signature solution.
- resolved Nov 03, 2025, 11:32 AM UTC
This incident has been resolved.
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