Linux Mail Server Expert – Postfix, Dovecot, Rspamd & Ansible

We are looking for an experienced **Linux Mail Server Engineer** to configure and automate a secure transactional mail server infrastructure on **Ubuntu 24.04**.

The project involves multiple domains and dedicated IPv4 addresses. Each domain should have its own SMTP credentials, mailbox/IMAP access, outbound IP, and properly configured email authentication.

### Required Experience

- Postfix, Dovecot, and Rspamd
- Multi-domain / multi-IP mail servers
- SMTP AUTH and IMAP
- SPF, DKIM, DMARC, and PTR/rDNS
- TLS and mail server security
- Email deliverability and IP reputation
- Ubuntu/Linux networking
- Ansible automation

### Key Requirement

A major requirement is **reusability**. After the initial server is working, the configuration should be automated with **Ansible**, allowing future servers to be deployed using the same setup with different domains and IP addresses.

This infrastructure is intended for **legitimate transactional emails**, such as invoices and customer reminders — not unsolicited bulk email.

We are looking for someone who can potentially become our **long-term technical partner** for future deployments, maintenance, and troubleshooting.

Please include examples of relevant mail server projects and briefly describe your experience with **Postfix multi-IP routing and Ansible**.

Full technical requirements, server details, and access information will be provided to the selected freelancer.