Listed on Spamhaus ZRD? How to get delisted
Spamhaus ZRD (Zero Reputation Domain) lists domains first seen very recently, usually within the last day. It flags a brand-new or zero-reputation domain rather than proven abuse.
Confirm whether your domain and mail servers are listed.
Why Spamhaus ZRD lists a domain
A domain lands on ZRD simply by being newly registered or observed in mail for the first time. Legitimate new domains are included too, for a short window while they establish reputation.
How to get delisted
- No manual delisting is needed, and Spamhaus does not accept removal requests for ZRD: a listing is removed automatically 24 hours after the domain was listed.
- If new mail is being filtered, warm the domain up gradually with low, consistent volume instead of a large first send.
- Publish SPF, DKIM, and an enforced DMARC policy now, so the domain is trusted the moment it ages out of ZRD.
Check your listing: https://check.spamhaus.org/
Prevent re-listing
Delisting only holds if the cause is fixed. Enforce a DMARC policy, keep SPF and DKIM aligned, secure sending accounts, and monitor for compromise. A clean deliverability report is the best signal that the underlying setup is sound.
Frequently asked questions
How long does Spamhaus ZRD delisting take?
It varies by list. Automatic lists clear within hours once the abuse stops. Manual removals apply as soon as the operator processes the request, provided the root cause is resolved.
Will delisting fix my deliverability?
Removing the listing helps, but receivers also weigh authentication and sending reputation. Pair delisting with a strong SPF, DKIM, and DMARC setup for lasting improvement.