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Hermes Secure Email Gateway is a Free Open Source Ubuntu 20.04 LTS Server based Email Gateway that provides Spam, Virus and Malware protection, full in-transit and at-rest email encryption as well as email archiving. It features the latest email authentication techniques such as SPF, DKIM and DMARC.

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deeztek/Hermes-Secure-Email-Gateway

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README.md

Hermes Secure Email Gateway

Open Source Unified Secure Email Gateway

Hermes Secure Email Gateway is a Free Open Source Ubuntu Server based Email Gateway that provides Spam, Virus and Malware protection, full in-transit and at-rest email encryption as well as email archiving. It features the latest email authentication techniques such as SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail) and DMARC (Domain-based Message Authentication, Reporting and Conformance) in order to combat email spoofing, phishing, scams, email compromise attacks and spam.

Hermes Secure Email Gateway combines Open Source technologies such as Postfix, Apache SpamAssassin, ClamAV, Amavisd-new and CipherMail under one unified web based Web GUI for easy administration and management of your incoming and ougoing email for your organization.

It can be deployed to protect your in-house email solution as well as cloud email solutions such as Google Mail and Microsoft Office 365.

• Malware and Spam Protection
• In Transit Email Encryption via Encrypted PDF, S/MIME, PGP and SMTP TLS
• Administrator Console
• User Console
• Built-In Email Archiving
• Active Directory Integration (PRO Feature)
• Searchable Event Logs
• Searchable Messages by Date/Time, Subject, Sender, Receiver, Type, Action
• Train Messages as Spam/Ham, Block/Allow Senders, Release to Recipient, Download Messages
• Integration with 3rd Party Threat Feeds such as Malware Patrol, Sanesecurity, Securite Info, Yara (Pro Feature)
• Built-In Firewall (PRO Feature)
• Multifactor Authentication
• Lets Encrypt (ACME) Certificate Integration (PRO Feature)
• haveibeenpwned.com Password Check Integration
• Custom File Expressions (PRO Feature)
• Custom File Extensions (PRO Feature)
• Custom Spam Filter Tests (PRO Feature)
• Custom Messages Rules (PRO Feature)
• Antivirus Signature Bypass (PRO Feature)
• 3rd Party SSL Certificates
• SPF, DKIM Check, DKIM Sign, DMARC
• Per-User Spam, Virus and File Policies

Hermes SEG can be easily installed in your existing Ubuntu 20.04 LTS Server machine by utilizing the ubuntu_hermes_install.sh script. The script requires that you have a fully updated Ubuntu installation and that you have a /mnt/data directory for database and email archive storage. You must have at least 8 GB of RAM and 4 CPUs.

Required Information

The script will prompt you for the following information before it starts installation. Ensure you have that information available before you begin:

• MySQL(MariaDB) root user password you wish to use
• MySQL(MariaDB) username you wish to use with the hermes database (Example: hermes)
• MySQL(MariaDB) password you wish to use with the hermes database user
• MySQL(MariaDB) username you wish to use with the Syslog database (Example: rsyslog)
• MySQL(MariaDB) password you wish to use with the Syslog database user
• MySQL(MariaDB) username you wish to use with the cipermail database (Example: ciphermail)
• MySQL(MariaDB) password you wish to use with the ciphermail database user
• MySQL(MariaDB) username you wish to use with the opendmarc database (Example: opendmarc)
• MySQL(MariaDB) password you wish to use with the opendmarc database user
• Lucee Server and Web Administrator password you wish to use
• System Mailname (Example: smtp.domain.tld)

The Configure /mnt/data partition directions below assume you have a 250GB secondary drive which you will partition, format and mount as /mnt/data.

Technically a secondary drive for the /mnt/data directory is not a requirement but it’s highly recommended for performance reasons. If you don’t wish to use a secondary drive for the /mnt/data directory, simply create a /mnt/data directory in your system and skip to the Quick script install and run instructions section.

Configure /mnt/data partition

Look for 250 GB drive you created earlier device ID, usually /dev/sdb. Ensure you select correct device ID before running the commands below)

Create partititon

• Hit «n» to add new partition
• Hit «p» for primary partition
• Hit «Enter» for partition 1
• Hit «Enter» for default first sector
• Hit «Enter» for default last sector
• Hit «w» to write changes to disk and exit

Format Partition

Mount Partition to /mnt/data

sudo mount /dev/sdb1 /mnt/data

Get disk UUID

Edit /etc/fstab

Add the following in /etc/fstab where DEVICE_ID is the UUID from the command above

UUID=DEVICE_ID /mnt/data ext4 errors=remount-ro 0 1

Verify drive is mounted

Should yield output similar to below:

Filesystem Size Used Avail Use% Mounted on udev 1.9G 0 1.9G 0% /dev tmpfs 395M 1.1M 394M 1% /run /dev/sda2 79G 5.5G 69G 8% / tmpfs 2.0G 0 2.0G 0% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup /dev/loop0 87M 87M 0 100% /snap/core/4917 /dev/loop1 90M 90M 0 100% /snap/core/8039 tmpfs 395M 0 395M 0% /run/user/1000 /dev/sdb1 246G 61M 233G 1% /mnt/data 

Reboot and ensure /mnt/data gets mounted automatically

Quick script install and run instructions

Git clone the Hermes SEG repository:

sudo git clone https://github.com/deeztek/Hermes-Secure-Email-Gateway.git

This will clone the repository and create a Hermes-Secure-Email-Gateway directory in the directory you ran the git clone command from.

Change to the Hermes-Secure-Email-Gateway directory:

sudo chmod +x ubuntu_hermes_install.sh

Ensure you follow the Getting Started Guide to get your Hermes SEG installation configured quickly and correctly.

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Secure Email Gateway Software for Linux

Compare the Top Secure Email Gateway Software for Linux of 2023

What is Secure Email Gateway Software for Linux?

Secure email gateway software provides a security platform that identifies and prevents web-based threats through the use of filters and labeling. Compare the best Secure Email Gateway software for Linux currently available using the table below.

RMail

RMail® is the e-security platform by RPost®, a global leader since 2000. RMail specializes in elegantly easy to use email encryption for privacy and compliance, e-signatures, legal e-delivery proof, secure file sharing, email impostor protection, document rights management, and AI-infused services to prevent data leaks and human e-security errors. RMail’s transmission e-security services are most often used by businesspeople or business systems that send important, sensitive, or consumer-regulated information. These RMail services are generally applied to those messages where the sender needs functionality beyond standard email in terms of (a) easier to use and more automated email encryption for privacy compliance, (b) returning a verifiable proof record of who said what to whom by email, (c) assurance and peace of mind related to delivery and open status of important and time-deadline email, (d) need a timestamped proof of content delivered, (f) need to share large files securely.

Z1 SecureMail Gateway

25% of the 100 German companies with the highest turnover choose Zertificon. Z1 SecureMail Gateway is our highly automated Enterprise Email Encryption solution for effortless, secure communications with anyone, anywhere. Your entire organization encrypts and decrypts, just as well manages & verifies email signatures smoothly in the background. Z1 SecureMail Gateway requires minimal maintenance. And the browser-based admin interface needs no special skills. Keys are managed automatically & central policies enforce security. Integration is fast into your Cloud or On-premises email infrastructure. Your workflows and business are uninterrupted — no employee training needed plus frictionless experience for recipients. With Z1 SecureMail Gateway, encryption is centrally configurable and proofed against human error. You easily achieve and maintain compliance and the highest security standards. You also own all encryption keys and attain German-engineered data sovereignty with no backdoors.

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Best Open Source Secure Email Gateway Packages

MailCleaner has its software dedicated specifically to the protection of our servers and professional emails, eliminating malicious files or spam emails, we are happy because their services offered are favorable for us and their configuration is easy, their tools offer an effective filter to avoid malicious emails and .

What is proxmox Mail Gateway?

Proxmox Mail Gateway is a comprehensive open source email security platform helping you protect your mail server from email threats, and ensuring data integrity with its enterprise-class feature-set.

What is the best email security?

• SpamTitan. SpamTitan is a leading secure email gateway platform that provides comprehensive protection against email threats including spam, malware, ransomware and phishing attacks. .
• Avanan. .
• Proofpoint Essentials. .
• N-able Mail Assure. .
• Mimecast Secure Email Gateway. .
• Barracuda Essentials. .
• Cisco Cloud Email Security. .
• IRONSCALES.

What is secure email gateway?

A Secure Email Gateway (SEG) is a device or software used for email monitoring that are being sent and received. An SEG is designed to prevent unwanted email and deliver good email. Messages that are unwanted include spam, phishing attacks, malware or fraudulent content.

Which is open source software package for email security?

MailScanner. MailScanner is among the most popular open source solutions for secure email gateways. It prevents attacks through spam using Spamassassin, viruses integrating third party antivirus such as Clam AV, phishing, malware and more.

What does a mail gateway do?

The mail gateway is a machine that handles connections between networks that run different communications protocols or communications between different networks that use the same protocol. . If a mail gateway exists, sendmail uses it for sending and receiving mail outside your domain.

Is proxmox a hypervisor?

Proxmox is the hypervisor for Proxmox Virtual Environment (PVE). PVE is an open-source server virtualization environment. PVE is a Debian-based Linux distribution with a modified Ubuntu LTS kernel and allows deployment and management of virtual machines and containers​.

How do I protect my email from malware?

1. Use antivirus software.
2. Scan all attachments for malware.
3. Refrain from opening potentially dangerous attachments, such as PDF files, that have been included in email messages from unknown senders.

How can I secure my email?

1. Use two-factor authentication. The basic principle of two-factor authentication is simple: combine something you know with something you have. .
2. Limit forwarding. .
3. Set expiration dates on your messages. .
4. Understand your service provider’s TOS. .
5. Encrypt your email.

Is Microsoft ATP a secure email gateway?

Microsoft Defender for Office 365 (formerly ATP) is Microsoft’s security platform built for enterprise customers on Office 365. Defender protects organizations against malicious email threats like phishing, malicious URLS and collaboration tools. . Defender also includes anti-phishing protection.

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