---
title: "MailMum for Mail Server Admins"
description: "Run your own blacklist/whitelist without depending on a third-party RBL's listing/delisting process, with full visibility into every decision MailMum made and why."
url: "https://mailmum.io/for-mail-admins/"
---

# MailMum for Mail Server Admins

You run Postfix, Exim, or another mail server, and you're tired of trusting a
public RBL's listing and delisting process, its false positives, and its
opaque scoring. MailMum gives you the same RBL-style integration your mail
server already knows how to use, but the list is entirely yours.

## What you get

* **Your own blacklist and whitelist**, down to a single server if you want
  it — whitelist always wins over blacklist, and rules resolve
  hierarchically (server rule first, then account rule).
* **Full visibility into every decision.** Every DNS query MailMum answers is
  logged: which IP connected, to which server, when, and whether it was
  blocked or passed.
* **Automatic network/ownership information** for incoming IPs, looked up and
  cached, so you're not running lookups by hand while investigating a
  suspicious sender.
* **Analytics you can act on** — blocked-vs-passed traffic, hourly
  request volume, and blacklist match counts per server.

## Getting started

Add a server in MailMum, get a unique identifier, and point your mail
server's RBL check at MailMum — the same `reject_rbl_client`-style
configuration you'd use for any public list. Full setup steps for Postfix,
Exim, and others are in the
[MailMum documentation](https://docs.mailmum.io/).

Then manage your IP rules yourself, with the full history of every decision
MailMum made close at hand.

Read the [MailMum Whitepaper](https://mailmum.io/whitepaper) for the reasoning behind the
design, or check the [FAQ](https://mailmum.io/faq) for common questions.