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SPAM?
Lo solucionamos.

Una puerta de enlace antispam para su servidor de correo. Bloquea spam, virus y phishing antes de que un mensaje llegue a un empleado.

MXGuard - Cuarentena
🦠
noreply@malware-dist.xyz
Invoice_Q4.exe
Virus
📢
promo@bulk-mailer.net
¡OFERTA! 90% de descuento solo hoy!!!
Spam
📧
ivan@partner-company.com
Contrato de suministro n.º 182
Entregado
🎣
security@bigbank-check.com
Su cuenta ha sido bloqueada
Phishing
📢
casino@win-lottery.bet
Ha ganado $1,000,000
Spam
📧
ceo@your-company.com
Reunión el viernes a las 15:00
Entregado
☁️
En la nube
Conéctese en 5 minutos
🖥️
Instálelo usted mismo
SPZGate en su propio servidor
📦
Instalación sin conexión
Un solo paquete, sin necesidad de internet
🏢
En nuestros centros de datos
5 centros de datos
🔧
Se lo instalamos nosotros
Llave en mano, por nuestros ingenieros
How it works

Three stages of protection
for every message

Before a message reaches an employee's inbox, it goes through multi-layer checks - automatically, with no human involved.

  1. 1
    Monitoring inbound traffic
    Mail arrives at our gateway instead of your server. We record the sender IP, check sender reputation, and analyze headers and structure.
  2. 2
    Threat detection
    Bayesian filters, DNSBL, SPF/DKIM/DMARC, 20,000+ spam traps, and attachment virus scanning - all running at once.
  3. 3
    Block or deliver
    Spam and viruses go to quarantine. Clean messages are delivered without delay.
📢
spam@domain.com
Get a loan right now
Spam
🦠
evil@hacker.net
Virus in attachment
Virus
🎣
bank@big-bank-check.com
Confirm your card details
Phishing
📧
contract@supplier.com
Contract #55 for signature
Delivered
📧
hr@jobboard.com
Candidate for the position
Delivered
↑ filtered in real time
Features

Full control over mail filtering

Tailor protection to your company. Every tool lives in one dashboard.

Email quarantine

Suspicious messages aren't deleted - they're held in quarantine. Review a message, release it with one click, or delete it permanently.

  • View held messages with full content
  • Release a message to the inbox in one click
  • Messages kept for up to 30 days
More about quarantine →
Quarantine 8,241 held today
📢
spam@domain.com
Make $100k a month
Spam
🦠
evil@hack.net
Important_document.exe
Virus
🎣
support@paypa1.com
Your account has been locked
Phishing
📢
offers@sale.com
99% off today only!
Spam

Whitelists & blacklists

Guarantee delivery from important senders, or permanently block unwanted addresses and domains. Works at the domain level or per individual mailbox.

  • Whitelist - always delivered
  • Blacklist - always blocked
  • Filter by domain, address, or subject
  • Configurable per mailbox
More about lists →
Whitelist
@partner.com
Partner
Always deliver
@supplier.com
Supplier
Always deliver
@jobboard.com
Job board
Always deliver
Blacklist
🚫
@spam-domain.com
Always block
🚫
@casino-win.bet
Always block

Processing rules

Build your own filtering logic: by sender, subject, content, or attachments. AND/OR conditions, and any action - forward, tag, block, or reject.

  • Nested AND / OR conditions
  • Forward, tag, or reject
  • Filter by attachment and file type
  • Regular expressions and wildcards
More about rules →
Processing rules
🚫
Block EXE attachments
Subject contains .exe → Reject
📤
Route invoices
From: @accounting* → Forward to fin@
🏷️
Tag [PROMO]
Subject contains discount → Add tag

Delivery tracker

Find any message in seconds. A full log with the history of every message, the filter's decision reason, delivery status, and processing time - for the last 90 days.

  • Search by sender, recipient, subject
  • Detailed filtering reason
  • 90-day history
  • Export to CSV
More about the tracker →
Message log
FromSubjectStatus
ivan@partner.com Invoice #188 Delivered
spam@mail.net Great offer for you Quarantine
ceo@company.com Urgent meeting Delivered
phish@fake.com Your password was changed Phishing

Antivirus & anti-phishing

Every message and attachment is scanned for viruses, trojans, and phishing links. More than 5,000 threats blocked daily - before a message reaches the recipient.

  • Every attachment scanned for viruses
  • Phishing links detected in message bodies
  • Over 5,000 viruses blocked per day
  • Admin notified when a threat is found
More about protection →
Threats blocked
🦠
Invoice_march.exe
Trojan.GenericKD.47821
Virus
🎣
http://paypa1-secure.com
Phishing link in body
Phishing
🦠
attachment.zip → run.bat
Win32.Ransomware.Locky
Virus
Integrations

Works with any mail server

Just change your MX record - all inbound mail routes through MXGuard. Your server stays untouched.

📨
Microsoft Exchange
On-premise and hybrid setups
☁️
Office 365
Set up in 10 minutes
📧
Google Workspace
Via domain MX records
🐧
Postfix / Exim
Any Linux server
3M
messages blocked per day
99.9%
filtering accuracy
2,000+
domains protected
30 days
quarantine retention
Infrastructure

Keeps working
even when your
server is down

Distributed infrastructure across multiple data centers. No message is ever lost.

🏢
Multiple data centers
Automatic failover with no message loss and no action needed from you
Up to 10 days of queuing
If your server is unreachable, messages wait and are delivered automatically once it's back
🕐
24/7 monitoring
Engineers watch filtering quality around the clock - weekends and holidays included
99.9%
guaranteed SLA
20,000
spam traps
2,000+
domains
5,000
viruses/day
10 days
mail queue
On-Premise

SPZGate -
a gateway on
your own server

Full control over your data. Installs with a single command right on your Linux server. Works without internet access - an offline package is available for closed networks.

🐳
Docker-based, 6 containers
qmail, nginx, php, MySQL 8, Redis, Memcached
📦
Offline install
~625 MB archive - for closed networks and government use
🔄
Auto-updates with rollback
Creates a backup, updates, and rolls back on failure
🔐
Your data stays yours
SIEM integration, REST API
Documentation → Download offline package
root@server:~
$ curl -fsSL mxguard.net/spzgate/install.sh | sudo bash
Checking OS: Ubuntu 24.04 LTS (amd64)
Docker CE 26.1.4 installed
Ports 25, 80, 443 are free
Pulling images... (6 containers)
All services running (6/6)
SPZGate 2.0.1 installed!
Open http://<server-IP> to configure
2 cores
CPU
2 GB
RAM
20 GB
Disk
Ubuntu/Debian
x86_64 · arm64
Offline install

SPZGate with
no internet

A single archive contains everything needed to install on a fully isolated network - no apt-get, docker pull, or outbound requests of any kind.

📦
One archive - everything inside
~625 MB: Docker images, qmail binaries, configs, install script
🔐
SHA-256 verification
A checksum is published alongside the archive - verify integrity before unpacking
🛡
Scan it with your own security tools
Run the archive through antivirus, SAST, or a vulnerability scanner before installing
🔄
Updates are offline too
Every release ships as the same kind of archive - download once, update on the isolated network
🏭
For closed environments
Government, banking, industrial sites - anywhere internet access is restricted by security policy
Download offline package SPZGate documentation
root@server:~
$ ls -lh spzgate-2.0.1-offline-amd64.tar.gz
-rw-r--r-- 1 root root 623M Jun 10 12:00 spzgate-2.0.1-offline-amd64.tar.gz
$ sha256sum -c spzgate-2.0.1-offline-amd64.tar.gz.sha256
spzgate-2.0.1-offline-amd64.tar.gz: OK
$ tar xzf spzgate-2.0.1-offline-amd64.tar.gz && sudo bash install.sh
Loading images from archive...
Docker images loaded (no internet used)
All services running (6/6)
SPZGate installed with no internet!
Open http://<server-IP> to configure
Archive naming
spzgate-X.Y.Z-offline-amd64.tar.gz
The current version and SHA-256 checksum are on the download page

Get started today.
First 14 days free.

5-minute setup. Any mail server.

Exchange · Office 365 · Google Workspace · Postfix · Any SMTP server