Email continues to be a cornerstone of business communication, but with legacy systems and diverse applications, organizations often struggle with secure, reliable email delivery. Retarus addresses these challenges with the SMTP Concentrator—a powerful tool designed to streamline and secure email communication for business applications without being directly exposed to the public internet.
What is the Retarus SMTP Concentrator?
The SMTP Concentrator acts as a secure email proxy, leveraging a TLS-encrypted SMTP connection to facilitate seamless communication with the Retarus Transactional Email Service. By acting as a bridge, it ensures secure email delivery without exposing customer systems directly to the public internet.
Key Functions:
- Secure Connections: TLS-encrypted SMTP sessions protect email transmissions.
- Authentication Options: Supports username/password, IP allowlists, or both.
- Zero Data Persistence: Emails are streamed securely without being stored on disk.
Deployment Highlights:
- Delivered via Docker container(s) for easy setup and scalability
- Supports load balancing for high availability and resilience via Load Balancer Integration
- Flexible authentication setup using locally stored or centrally managed CSV files
- Transaction logging with reference ID to facilitate Live Search
Why Choose the SMTP Concentrator?
Benefits for Customers
- Simplified Management: Easily onboard as well as modernize and manage legacy applications while enforcing robust authentication and compliance controls
- Enhanced Security: Reduce risks with centralized visibility and control over email traffic; enable better compliance
- Resource Thrift: Highly scalable docker containers are more performant and secure than Linux servers running Postfix.
- Scalable Performance: Processes up to 15,000 emails per minute under optimal conditions
- Infrastructure Efficiency: Works seamlessly with Retarus solutions, reducing complexity and improving reliability
- Organizational Insights: Organizations gain an inventory of all authorized legacy applications, simplifying future upgrades and migrations.
SMTP Concentrator Made Easy with Retarus
Faster Onboarding and Implementation
- A single connection string per Docker deployment simplifies setup.
- Ready-to-operate solutions that support multi-cluster environments
Enhanced Observability and Security
- Full visibility of all application emails
- Streamlined security processes, reducing the attack surface
Value-Added Features
- Regional deployments ensure compliance with data sovereignty requirements.
- Enables centralized management while supporting distributed environments
Key Takeaways
The SMTP Concentrator complements Retarus’ Transactional Email Services, providing organizations with:
- Improved Email Security and Compliance: Ensures encrypted, authenticated communication
- Simplified Operations: Centralized management of legacy and modern applications
- Global Flexibility: Deployed across multiple regions with seamless integration into Retarus infrastructure
The Retarus SMTP Concentrator offers a smarter, safer way to manage application emails. Organizations gain control over their email ecosystem, ensuring secure, efficient, and compliant communication. Whether managing legacy applications or modern systems, this solution bridges the gap between security and performance, making email management less complex and more intelligent.
Learn more about Retarus Transactional Email.
