Knowledge base
Authentication
Signing and validation
Delivery
- Scripted routing
- How to deliver using LMTP
- In-line delivery
- Outbound deliverability
- Using HAProxy for sharing outbound IP addresses
- Enable the DSN extensions
TLS
Logging
Monitoring
Integration
Threat protection
Miscellaneous
- RFC & standards compatibility
- High availability and load balancing
- How to implement recipient filtering
- Check if the sender domain exists
- Rate limiting
- SPF