Confirm the prerequisites
Check outbound SMTP, reverse DNS and the exact port policy before ordering. Confirm the actual port-25 policy and address reputation for your order; no clean-IP guarantee is given here.
Choose capacity for the stack
The Warden tier is a starting point to evaluate for a small deployment. Antivirus, spam filtering, search and attachment volume can change the required memory and storage.
Set the domain protections
Align the hostname and reverse record and configure SPF, DKIM and DMARC deliberately. Test TLS and the mail stack’s supported transport-security features. Keep a separate outage contact.
Earn and monitor delivery
Follow wanted-mail practices and handle bounces and complaints. Recipients can filter a valid server, so no provider can guarantee inbox placement everywhere.
Back up mail consistently
Protect mailbox data, configuration, signing keys and account information. Test a recovery and keep copies outside the machine. Mail often becomes part of other accounts’ recovery chain, which raises the cost of losing it.
Choose resources for this workload
Estimate mailbox storage, antivirus memory, queue size and backup copies before choosing a tier. Compare a larger VPS or Scout Metal for substantial mail storage. Confirm outbound port 25 policy, reverse DNS control and address reputation before treating any plan as suitable for direct delivery.
A mail service rollout
Use the maintained upstream instructions for the selected release. The sequence below identifies the decisions and pass conditions to record in your own runbook.
- Choose the mail hostname, domain and maintenance owner
- Confirm required ports, reverse DNS and external dependencies
- Install a supported mail stack with protected administrative access
- Set MX, SPF, DKIM and DMARC for the intended sending policy
- Test inbound delivery, authenticated submission, relay rejection and spam handling
- Back up mailboxes, databases, configuration and required keys; test a restore
Official documentation: Maintained upstream setup guidance
What to verify before relying on it
Delivery depends on recipient policy and reputation as well as DNS correctness. Confirm mail-port access, reverse DNS and address reputation separately; none implies guaranteed inbox placement. Keep a verified route for account notices if your own mail host is unavailable.
A little more clarity.
Does this use case include a managed application installation?
No. It describes a workload for customer-administered infrastructure. Application setup, updates, moderation, licensing and recovery remain your responsibility unless a separate managed agreement says otherwise.