What must be ready before a dedicated server sends and receives email?
Mail readiness requires more than an SMTP process listening on a port. DNS, sender authentication, access controls, queue handling and the receiving provider’s requirements all affect delivery. No server configuration can guarantee that every message reaches every inbox.
Before you start
- Authorised domain DNS access, an allocated IP and the provider’s confirmed mail-network policy.
Instructions
1. Confirm network and identity prerequisites
Ask whether the required inbound and outbound mail connections are permitted for the service. Configure the mail hostname and appropriate forward/reverse DNS through the responsible providers. Publish the intended MX records for receiving mail; reverse DNS alone does not define domain delivery.
2. Configure the supported mail policy
Set up SPF, DKIM and DMARC with correct domain alignment for the real senders, and use the platform’s supported TLS configuration. Restrict relay to authorised users and systems. Review recipient-provider requirements; Google’s published rules for personal Gmail accounts are one concrete example, not a universal promise of acceptance elsewhere.
3. Test delivery and operations
Use authorised test mailboxes to verify inbound, outbound and internal delivery, authentication results and bounce handling. Monitor queues, rejected messages, disk capacity and abuse reports. Keep marketing consent and unsubscribe handling appropriate to the actual sending service, and investigate delivery failures from their exact SMTP responses.
Check the result
- Test messages follow the intended routes and show expected authentication and TLS behaviour.
- The server cannot relay arbitrary unauthorised mail and operational failures are visible.
Troubleshooting
- The server accepts a message but it does not reach the recipient
- Inspect the outgoing queue and remote SMTP response. Local acceptance does not prove final delivery; DNS, policy, reputation or recipient rejection may still be involved.
Official references
Use the documentation for your installed version when a flag, service name or platform feature differs.