MailScan Secure Email Gateway (SEG)
Next-Generation Email Security for the Cloud
MailScan Secure Email Gateway (SEG) is a cutting-edge email security solution that supports cloud-based platforms and safeguards mail servers from a wide range of email-borne threats, including viruses, spam, phishing, and malware. Positioned between the internet and your organization's mail server, MailScan SEG serves as a powerful security barrier, scanning and filtering both inbound and outbound email traffic in real time to ensure comprehensive protection and seamless communication.
This product provides protection with multi-layered content filtering, attachment control, and robust anti-virus and anti-spam mechanisms. It also includes integrated encryption, directory-based authentication, logging and reporting tools. MailScan SEG supports a wide variety of mail servers and scales effortlessly to meet the needs of both enterprise and SMB environments, ensuring seamless, secure email communication across all sizes of organizations.
MailScan SEG offers flexible deployment options, seamlessly integrating between the internet and your mail server across diverse environments. Whether you're using cloud-based platforms like Google Workspace (Gmail) or Microsoft 365 (Office 365), or on-premises mail servers such as Microsoft Exchange, Lotus Notes, CommuniGate Pro, VPOP3, Merak, Mailtraq, or any standard SMTP based system, MailScan SEG ensures top-tier email security and protection for all your communication channels.
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How It Works?
MailScan Secure Email Gateway (SEG) delivers powerful, real-time email security for both cloud platforms like Google Workspace (Gmail) and Microsoft 365 (Office 365) and on-premises systems including Microsoft Exchange, Lotus Notes, CommuniGate Pro, VPOP3, Merak, and Mailtraq. Positioned between your mail server and the Internet, MailScan SEG acts as a centralized checkpoint, continuously scanning and filtering all incoming and outgoing email.
The solution’s architectural framework strengthens enterprise-grade email security by empowering administrators to enforce granular mail-flow policies, apply sophisticated content controls, and maintain full visibility across communications with zero impact on performance or usability. MailScan SEG protects against spam, phishing, malware, and data-loss threats while supporting internal policy enforcement and regulatory compliance.
MailScan SEG ensures every incoming email is thoroughly inspected before reaching user inboxes, and outbound messages are screened to prevent threats from leaving your organization. By catching risks early, it protects users, preserves your domain reputation, and prevents accidental spam or malware distribution.
In addition to advanced filtering, the solution offers a unified management platform with centralized policy control, simplified user access management, seamless authentication integration, and detailed logging for audit-ready visibility. Administrators can effortlessly create custom rules, monitor quarantined messages, and generate actionable reports, ensuring that email communication remains secure, efficient, and fully compliant across the organization.
Key Features
Email Security & Threat protection
Content/Spam Control
This feature enables policy-based filtering of email content using predefined or custom keywords and phrases in the subject or body of messages. Administrators can set and enforce policies to prevent the sharing of sensitive, confidential, or inappropriate content, ensuring compliance and protecting organizational data.
- Email Threat Protection: MailScan SEG uses a multi-layered threat detection system to block unsolicited, malicious, and phishing emails before they reach the user's inbox. It combines advanced heuristic and behavioral analysis, real-time RBL (Real-time Blackhole List) integration, and Bayesian filtering powered by live threat intelligence feeds, ensuring highly accurate threat detection with minimal false positives.
- Real-Time Email Filtering: A policy-driven email control framework that boosts security and visibility by quarantining suspicious messages, tagging threats with spam or virus labels, enforcing dynamic rules based on content and sender reputation, and blocking communications from high-risk IPs, including those on Dynamic User Lists (DUL).
Advanced Threat Scanning
This feature delivers granular administrative control over email security by allowing precise inclusion or exclusion rules for specific addresses during virus scanning. It performs deep content and attachment analysis to detect concealed, polymorphic, or evolving threats. Additionally, its built-in outbreak alert system proactively notifies administrators of emerging phishing or malware campaigns, enabling rapid response and reinforcing the organization’s overall security posture.
Email Security Administration
This module offers a centralized administrative interface to manage and control all email scanning and security functions related to attachments. Administrators can set policies for processing, scanning, and quarantining attachments based on identified threat levels, ensuring that potential risks are effectively blocked before users can access them. This proactive approach enhances security by preventing the delivery of harmful attachments and protecting the organization from evolving threats.
Auto-generated Spam Whitelist
The Auto-Generated Spam Whitelist automatically maintains a trusted list of email addresses, ensuring that messages from recognized senders bypass spam filtering. Whenever a local user sends an email to a new recipient, MailScan automatically adds that address to the whitelist, guaranteeing that future communications from that sender are delivered directly to the inbox without being flagged as spam.
Mail Disclaimer Enforcement
Customized disclaimers in MailScan SEG are automatically added to emails to ensure legal compliance, maintain confidentiality, and uphold branding consistency. These disclaimers can be predefined or tailored to suit specific needs and are applied to both inbound and outbound emails, ensuring that recipients consistently receive important organizational, legal, or regulatory notices with every communication.
Email Routing Configurations
Email Gateway Policy Management
MailScan SEG offers flexible control over both inbound and outbound email traffic, with customizable host-level and domain-level settings. It supports direction-based mail policies and granular user/group restrictions, allowing administrators to block external communications or control email flow between internal departments.
Mail User Restrictions
Mail User Restrictions are an essential feature for optimizing email traffic security and governance. Administrators can configure policies to control email flow based on parameters such as sender, recipient, domain, message size, attachment types, and delivery scope. These granular controls help mitigate security risks by blocking malicious or unauthorized communications, reducing spam, and safeguarding against unwanted content. By proactively managing email traffic, these restrictions not only enhance system security but also improve mail server performance, ensuring a secure and efficient communication environment for the organization.
SMTP Server Configuration
SMTP Server Settings (in MailScan SEG)
This feature provides the core framework for managing both inbound and outbound email traffic. Administrators gain complete control over routing paths, authentication protocols, relay permissions, and connection settings. By incorporating relay management, rate limiting, and encryption policies, MailScan SEG ensures a secure, efficient, and policy-compliant flow of email communications, safeguarding against unauthorized access and ensuring optimal performance across the network.
Mail Relay Configuration (ETRN)
The Extended Turn (ETRN) protocol in MailScan SEG ensures reliable email delivery by securely transferring queued or delayed messages between mail servers when the destination server is temporarily unavailable. Administrators can easily configure relay intervals, retry durations, and delivery rules to optimize the timing and handling of message retries, minimizing mail queue congestion and ensuring that emails are delivered efficiently and on schedule.
Outbound Email Security (DKIM/DMARC)
MailScan SEG fully integrates with DKIM (DomainKeys Identified Mail) and DMARC (Domain-based Message Authentication, Reporting & Conformance) standards, providing robust defense against email spoofing, phishing, and identity fraud. DKIM digitally signs outgoing messages, allowing recipients to authenticate the legitimacy of each email. DMARC further strengthens email security by enforcing policies and delivering real-time reporting, enabling the detection and blocking of fraudulent messages.
Greylisting
This feature enhances email security by effectively filtering out spam through a temporary rejection mechanism for unknown or first-time senders. Legitimate mail servers are programmed to automatically retry the delivery after a brief delay, ensuring successful acceptance on the second attempt. Most spam systems do not retry, leading to a significant reduction in unwanted email traffic. This process not only improves inbox hygiene but also strengthens overall email security by blocking a substantial amount of spam before it reaches users.
System Integration Support
Integration with email cloud services (E.g.: Google Workspace, Office 365, etc)
MailScan SEG integrates seamlessly with Microsoft 365 (Office 365) to deliver advanced email security and full visibility. By routing both inbound and outbound email traffic through an on-premises MailScan SEG gateway, organizations can enforce granular scanning, quarantine policies, and compliance protocols before emails reach the Microsoft cloud infrastructure. This setup ensures consistent policy enforcement, comprehensive auditability, and secure email flow, protecting against data breaches, unauthorized access, and ensuring regulatory compliance across the enterprise.
On-Premise Integration
MailScan SEG integrates effortlessly with a wide array of on-premises mail servers, including Microsoft Exchange, Lotus Notes, VPOP3, Merak, CommuniGate Pro, and Mailtraq. Functioning as a robust security layer between your internal mail server and the internet, it provides real-time scanning, filtering, and logging of both inbound and outbound email traffic. This ensures comprehensive security, compliance, and seamless interoperability across mixed or hybrid environments, all while avoiding the need for costly infrastructure upgrades.
