Setting Up an SMTP Relay Server for Transactional Email
An SMTP relay server is essential for sending transactional emails reliably.
What is an SMTP Relay?
An SMTP relay acts as an intermediary that accepts outgoing email from your application servers and delivers them to recipients.
Why Use an SMTP Relay?
- Separation of concerns - App servers do not handle email delivery
- Centralized control - One point for monitoring
- Security - Isolate email infrastructure
- Scalability - Handle email volume spikes
PostMTA as SMTP Relay
PostMTA provides enterprise SMTP relay:
- High availability clustering
- Automatic failover
- Real-time analytics
- DKIM/SPF/DMARC support
Get started: https://postmta.com
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