Lettermint incident

[Blocklist] Transactional IP is listed in Spamhaus

Minor Resolved View vendor source →

Lettermint experienced a minor incident on June 22, 2026, lasting —. The incident has been resolved; the full update timeline is below.

Started
Jun 22, 2026, 01:07 PM UTC
Resolved
Jun 22, 2026, 01:07 PM UTC
Duration
—
Detected by Pingoru
Jun 22, 2026, 01:07 PM UTC

Update timeline

  1. monitoring Jun 22, 2026, 12:32 PM UTC

    Status: Monitoring We’ve identified that one of our outbound transactional IP addresses has been blocklisted, affecting email delivery for some customers. The team is currently investigating the cause and working on delisting the IP. In the meantime, the IP address has been suspended and will not be used until the issue is resolved. This does not affect other IPs in the pool nor broadcast routes. If you have seen a hard bounce because of this you can safely reactivate the recipient from your suppression management. As of 11.44 UTC, the listing has been removed and we are monitoring the situation. Affected components Outgoing (Transactional) (Degraded performance)

  2. resolved Jun 22, 2026, 01:07 PM UTC

    Status: Resolved We have not seen any new bounces due to the listing and are actively looking into resending all bounced messages. Recipients that bounced due to the Spamhaus listing should not be suppressed. If it still did so, feel free to remove these from the suppression list. Our sincere apologies for the inconvenience. Affected components Outgoing (Transactional) (Operational)