MegaWit Postmaster (MWP) manages the Exim queue, catches compromised accounts before they get you blacklisted, blocks bad senders at the mail server, and fixes SPF/DKIM/DMARC in one click — everything ConfigServer Mail Queues (cmq) did, plus outbound-spam defense and full deliverability control.
Manage the Exim queue, stop outbound spam, block abusive senders and keep every domain authenticated — without touching the command line.
Browse, search, view, deliver, freeze/thaw and delete queued mail in bulk — with all / frozen / bounce filters. Everything cmq did, faster.
Spots compromised accounts and spam runs by send-rate, recipient fan-out and bounce ratio — and auto-freezes their mail before you get blacklisted.
Block a sender address or a whole domain — enforced right in Exim (rejected at MAIL FROM, even for authenticated users). Plus a trusted whitelist.
Auto-detects every domain missing records and fixes them in one click — including generating a safe DMARC policy straight into the DNS zone.
Checks your server IP against major RBLs (Spamhaus, SpamCop, Barracuda, SORBS) and verifies PTR / reverse-DNS at a glance.
Choose which of the server's IP addresses Exim sends from — pick a clean IP with a matching PTR, applied instantly.
See exactly who sent what, where to, and whether it was delivered or failed — a searchable, paginated sender → recipient activity feed.
Each cPanel account gets its own tile to check its domains' authentication and its own mail — safely scoped to that account.
Email, Slack & Telegram — instant or daily digest — the moment an account starts spamming, plus license reminders. Multi-language WHM panel.
Review the queue, traffic, abuse and deliverability right from WHM — no SSH required.
Postmaster
ConfigServer Mail Queues (cmq) is discontinued and only ever browsed the queue. Here's how MWP compares.
| Capability | MegaWit Postmaster | ConfigServer cmq | Imunify360 (email) |
|---|---|---|---|
| Exim queue browse / bulk actions | ✓ | ✓ | Partial |
| Outbound-spam / compromised-account detection | ✓ | ✗ | ✓ |
| Sender blacklist enforced in Exim | ✓ | ✗ | Partial |
| One-click SPF / DKIM / DMARC fix | ✓ | ✗ | ✗ |
| RBL / PTR reputation checks | ✓ | ✗ | ✓ |
| Outbound sending-IP control | ✓ | ✗ | ✗ |
| Full WHM dashboard + end-user plugin | ✓ | Basic | ✓ |
| Actively maintained | ✓ | Discontinued | ✓ |
| Price | $9.99/mo | free (dead) | $$$ higher |
No credit card. The trial activates automatically on first install — one per server. Exim is required (this is a mail-server tool).
SSH into your cPanel/WHM server (CentOS 7+, CloudLinux, AlmaLinux, Rocky, Ubuntu or Debian).
This installs the agent, sets up queue & abuse monitoring, the WHM panel and the cPanel end-user plugin, and starts your 15-day trial automatically.
Go to WHM » Plugins » MegaWit Postmaster for live queue, traffic and abuse — and each cPanel account gets its own tile under Email.
Buy a key, then paste it in WHM » MegaWit Postmaster » Settings » License — no SSH required. It binds to this server and unlocks continuous protection after the trial.
No per-account fees. Manage mail for every cPanel account on the server for one flat price.
Pair it with MegaWit Shield for full server security + mail protection.
Yes. cmq is discontinued, and MWP is a modern replacement. It does everything cmq did — browse and manage the Exim queue — and adds outbound-spam detection, sender blacklisting enforced in Exim, one-click SPF/DKIM/DMARC, RBL/PTR checks, outbound-IP control and a full WHM + cPanel dashboard.
MWP watches the Exim logs for tell-tale spam patterns — high send rate, large recipient fan-out and high bounce ratios — attributed to the authenticated user or local injector. When an account crosses your thresholds it's flagged and its queued mail is auto-frozen, and you get an instant alert.
Yes. Blacklisted senders are enforced by a custom Exim ACL — the mail is rejected at MAIL FROM (and for local PHP mail too), even for authenticated users. Add an address or a whole domain from the panel; it takes effect immediately with no Exim restart.
Run the one-line installer and a 15-day trial activates automatically — one per server, no credit card. One license = one server with unlimited cPanel accounts; it binds to the server by hardware fingerprint and can be moved from your billing panel anytime.
CentOS 7+, CloudLinux, AlmaLinux, Rocky Linux, Ubuntu and Debian — anywhere cPanel/WHM with Exim runs. The agent is a single static Go binary with no dependencies.
No. MWP reads the Exim queue and logs and manages standard cPanel files (mailips, DNS zones, an Exim ACL) using cPanel's own tools. Nothing is changed without your action, and the blacklist file is read live so there's no risky config rebuild on every change.
Start a free 15-day trial in minutes, or grab a license and take control of every account's mail on your server today.