---
title: "Abuse Desk"
description: "An abuse desk is the team behind a provider's abuse@ address. It receives reports about spam, phishing and malware coming from the provider's own network and acts on them."
url: "https://mailmum.io/glossary/abuse-desk/"
---

# Abuse Desk

An abuse desk is the team, or in smaller organisations the single person, that
handles reports about [abuse](https://mailmum.io/glossary/abuse/) originating from an
organisation's own network, IP ranges or customer accounts. Every
[ISP](https://mailmum.io/glossary/internet-service-provider-isp/),
[ESP](https://mailmum.io/glossary/email-service-provider-esp/) and hosting provider is expected to
run one and to publish a way of reaching it.

The abuse desk is the counterpart to the mailbox you write to when a server
under someone else's control sends you spam or phishing. It is not a customer
support channel — it exists so that outsiders can report a provider's own
customers to that provider.

## What does an abuse desk do?

The daily work of an abuse desk follows a fairly consistent pattern:

* **Receive reports.** These arrive as free-text mail to `abuse@`, as
  machine-readable [ARF](https://mailmum.io/glossary/abuse-reporting-format-arf/) reports from
  feedback loops, and as automated feeds from blocklist operators, spam traps
  and CERTs.
* **Triage and verify.** Not every report is valid. The desk checks logs to
  confirm that the traffic really came from its own IP space and identifies the
  customer, server or account behind it.
* **Act.** Depending on the severity and the
  [acceptable use policy](https://mailmum.io/glossary/acceptable-use-policy-aup/), the response
  ranges from notifying the customer, to rate-limiting or null-routing an IP, to
  suspending or terminating the account. Compromised accounts usually need a
  password reset and a check for forwarding rules the attacker left behind.
* **Respond.** The reporter gets an answer, and the desk handles delisting
  requests for its own IP ranges once the underlying problem is fixed.

## How do you contact an abuse desk?

There are three places to look, in this order:

**The `abuse@` role address.** [RFC 2142](https://www.rfc-editor.org/rfc/rfc2142)
defines `abuse@` as the mailbox for reporting inappropriate public behaviour, and
it is expected to exist for every domain that operates network services. It
should be reachable without a support contract and should not sit behind a
spam filter aggressive enough to silently drop reports.

**The abuse contact in the RIR database.** Whoever holds the IP range publishes
an abuse contact with their Regional Internet Registry — `abuse-c:` with an
`abuse-mailbox:` attribute at RIPE, an Abuse POC at ARIN, and an `irt` object at
APNIC. A `whois` lookup on the offending IP address is the reliable way to find
the responsible party, since the sending domain may have nothing to do with the
network operator:

```txt
$ whois 192.0.2.25 | grep -i abuse
% Abuse contact for '192.0.2.0 - 192.0.2.255' is 'abuse@example-hoster.net'
```

**The provider's web form.** Some larger providers prefer a form or a ticket
portal over mail. These are usually linked from the provider's security or legal
page.

## Why an abuse desk matters for deliverability

An unresponsive abuse desk is a deliverability problem, not just a compliance
one:

* Blocklist operators escalate. When reports about a network go unanswered,
  listings expand from single IP addresses to whole ranges, and eventually to the
  provider's [ASN](https://mailmum.io/glossary/autonomous-system-number-asn/). At that point every
  customer on those ranges is affected by
  [IP blacklisting](https://mailmum.io/glossary/ip-blacklisting/), including the ones who never
  sent a single spam message.
* An unreachable or bouncing abuse contact is itself treated as a negative
  reputation signal by several blocklists and by large mailbox providers.
* Feedback loops from mailbox providers deliver their ARF complaints to the
  abuse or a designated address. If nobody processes them, complaint rates keep
  rising unnoticed until mail starts being rejected.

## What should you do when a report reaches your abuse desk?

If you run your own mail infrastructure, you are the abuse desk. A workable
minimum:

1. Make sure `abuse@` for every domain you operate actually reaches a human, and
   that it is exempt from the strictest parts of your own filtering.
2. Acknowledge reports and work with a defined turnaround — 24 hours for
   phishing and malware, a few business days for lower-severity spam, is a common
   expectation.
3. Look for the root cause rather than the symptom. Most outbound spam from
   legitimate infrastructure comes from a compromised mailbox, a hijacked web
   form, or an unsecured relay — not from a customer who decided to become a
   spammer.
4. Keep records of what was reported and what you did. This is what you point to
   when requesting delisting.
5. Watch for [backscatter](https://mailmum.io/glossary/backscatter/) from your own servers, which
   generates abuse reports against you even though the original messages were
   forged.

## Related reading

* [Abuse](https://mailmum.io/glossary/abuse/) — what actually gets reported to an abuse
  desk.
* [Abuse Reporting Format (ARF)](https://mailmum.io/glossary/abuse-reporting-format-arf/) —
  the machine-readable format most of those reports arrive in.
* [Manage Postfix mail server queues like a
  pro](https://mailmum.io/posts/manage-postfix-mail-server-queues/) — the first thing to
  look at when a report says mail is coming from your server.