Enterprise email infrastructure that sits in front of your cPanel/WHM servers. It signs, filters, and delivers outbound mail from reputation-managed IP pools; it strips spam and viruses from inbound mail and passes it to your server clean.
On shared hosting, a single compromised WordPress install or a stolen email password can burn the server's entire IP reputation within hours. When that happens, mail from every customer on that server lands in spam. MailGuard first filters and rate-limits outbound traffic and sends it from fixed, reputation-monitored exit IPs assigned per domain — so one customer's problem doesn't affect the others.
For detailed, copy-paste configuration, see the docs. To test your domain, use the SPF/DKIM/DMARC tool and the mail test.
Installed with a single command, the MailGuard WHM plugin tests the relay connection, applies or rolls back the Exim route in one click, and shows server-wide outbound/inbound statistics along with searchable, paginated live mail logs inside WHM. The cPanel end user sees only the data for their own domains.
outbound relay activeRoute your cPanel/WHM server's outbound mail through MailGuard — authenticated (SASL); DKIM is signed for you.
| Time | Dir | Domain | Recipient | Status |
|---|---|---|---|---|
| 2026-07-25 22:08 | out | acme.com.tr | info@musteri.com | sent |
| 2026-07-25 21:54 | in | acme.com.tr | destek@acme.com.tr | delivered |
| 2026-07-25 21:39 | out | ornekfirma.com | bulten@liste.net | bounced |
| MailGuard | Directly from the server | Doing nothing | |
|---|---|---|---|
| DKIM signature on outbound mail | Automatic (MailGuard signs) | You have to set it up | None |
| IP reputation management | Fixed, monitored pool per domain | Single IP — everyone at the same risk | None |
| Inbound spam / virus filter | Yes (MX routing) | Depends on the server | None |
| Blacklisting risk | Minimal (isolated pool) | High | High |
| Delivery visibility / logs | Real-time dashboard + API | Limited | None |
We finished the cPanel integration in a few minutes. Our spam rate dropped significantly, and delivery success rose noticeably.
We use it on all of our cPanel servers. It's very practical to manage.
Configuration on the cPanel side was done within a few minutes. We're happy with the results.
Its protection of IP reputation in particular has been a big advantage for us. We're pleased with our delivery rates.
We integrated it easily without changing our mail infrastructure. The process was very smooth.
After setup, it has kept running stably without needing any maintenance.
Let's talk through your current setup, your volume, and your delivery issues, and put together a migration plan tailored to you.
Get a QuotecPanel/WHM is the most common control panel for shared and VPS hosting. On a single server, the mail of dozens — sometimes hundreds — of accounts goes out from one IP block. This model is convenient but carries a reputation risk: if one of the accounts is compromised or a customer sends bulk/unsolicited mail, the server's exit IP ends up on blacklists and everyone sending from that IP is affected.
An email gateway (smarthost) routes outbound mail to its own infrastructure first, rather than straight to the destination. At this point MailGuard does three things: identity (SPF alignment + DKIM signature), control (content/spam score, rate limiting, virus scanning), and reputation (a fixed, monitored exit IP per domain; a problematic tenant is automatically moved to an isolated pool). This way, a single bad send doesn't affect the whole server.
On the inbound side, once you point your MX record to MailGuard, threats are filtered out at the door before they ever reach your server; the disk and CPU load stays on MailGuard. With the cPanel/WHM plugin, setup is done in one click and end users can view their own mail logs from within cPanel.