Blacklist Monitoring
Keep your IP addresses clean and deliverable. We monitor RBL lists continuously and provide an abuse mailbox that forwards reports to the right clients.
What We Offer
Whether you lease IPs to multiple clients or manage your own space, our blacklist monitoring and abuse mailbox services keep you in control.
RBL List Checking
We continuously check your IP addresses against major RBL (Realtime Blackhole List) providers including Spamhaus, SORBS, SpamCop, and others. Get alerted the moment a listing appears.
Abuse Mailbox Forwarding
We provide a dedicated abuse mailbox that receives abuse reports. Configure rules to forward particular emails to particular clients, so each lessee or tenant gets only the reports relevant to their IPs.
Listing Alerts
Receive notifications when your IPs are listed or delisted. Stay ahead of deliverability issues before they impact your business.
Reputation Visibility
Track your IP reputation across blocklists in one dashboard. See listing history, delist status, and which RBLs affect your space.
Abuse Mailbox Forwarding
When you have multiple clients or tenants using your IP space, abuse reports can be overwhelming. We provide a central abuse mailbox that receives all reports, then forwards each one to the appropriate client based on the affected IP range.
Configure forwarding rules by IP block, client, or tenant. Each party receives only the abuse reports relevant to their space, with no manual triage and no missed reports.
Example forwarding setup
- Reports for 192.0.2.0/24 → client-a@example.com
- Reports for 198.51.100.0/24 → client-b@example.com
- All other reports → abuse@yourdomain.com
Service Includes
Why reputation is the thing that actually breaks
An IP block that routes perfectly can still be useless. If it sits on a major blocklist, mail silently disappears, sign-up flows start failing, and the support tickets arrive before anyone internally knows why. The address space is fine; its reputation is not.
Listings rarely announce themselves. Most blocklists have no obligation to notify you, and the first signal is usually a customer complaining that something stopped working. By then the listing may be days old and the delisting queue longer than it needed to be.
Monitoring exists to close that gap. Knowing within hours rather than weeks is the difference between a quick delist request and a drawn-out argument about whether the problem has been fixed.
Monitoring questions
Which blocklists do you monitor?
The major ones that actually affect deliverability and access, including Spamhaus and the other widely enforced RBLs, more than ten in total. We focus on lists that networks genuinely filter against rather than inflating the count with obscure ones nobody honours.
How quickly will I know about a listing?
Checks run continuously and alerts go out when status changes, so you hear about a listing in hours rather than when a customer notices. Delisting alerts work the same way, so you know when the problem is actually resolved.
Can you get addresses delisted for me?
We help where the list allows it. Some accept a straightforward request once the underlying cause is fixed; others require evidence, and a few impose fixed waiting periods no one can shorten. What we can always do is tell you which category you are in rather than leaving you guessing.
How does the abuse mailbox work?
You get a dedicated address that receives abuse reports for your space. Forwarding rules route each report to whoever is responsible, whether by IP block, by client, or by tenant, so the right party gets it without you reading every message first.
Does this work for space I did not get from you?
Yes. Monitoring and the abuse mailbox work on any IPv4 or IPv6 space you control, whether you lease it from us, bought it elsewhere, or hold it directly.
What if my own customers cause the listings?
That is the common case for anyone subletting space, and it is exactly what the forwarding rules are for. Reports reach the responsible tenant directly, which shortens the time to a fix and gives you a record of who was notified and when.
Related Services
Other ways we help with IPv4 address space.
Buy IPv4
Purchase IPv4 address blocks outright
Lease IPv4
Rent IPv4 addresses on flexible terms
GRE Tunneling
Dedicated GRE tunnel solutions
Further reading
IP Reputation Management: Keeping Your Addresses CleanYour IP address reputation directly impacts email deliverability, service availability, and business operations. Here's how to monitor and maintain it.
Want to keep your IP space clean?
Tell us which ranges you want monitored and how abuse reports should be routed to your clients. We usually reply in 1-3 business hours.