Postfix SME

Postfix SME

Whitehall Resources are looking for a Postfix SME. This role is remote working, for an initial 3-month contract.

*Candidates MUST be Eligible for SC Clearance*
*Inside IR35*

Job Description:
We are seeking a highly skilled and hands-on Postfix SMTP Relay Engineer to document, build, and deploy an on-premises email relay infrastructure using Postfix. This role requires deep expertise in SMTP protocols, mail routing, and secure Mail Server configuration. They will be need to understand Low-Level Design (LLD) documentation and have proven experience in implementing a robust, secure, and scalable Postfix-based relay solution that integrates with enterprise systems.

Required Skills & Experience:
. Extensive hands-on experience with Postfix in enterprise environments.
. Strong understanding of SMTP protocols, email routing, and mail security.
. Proficiency in Linux system administration (eg, RHEL, CentOS, Ubuntu).
. Experience in reading and implementing Low-Level Designs.
. Familiarity with TLS, SPF/DKIM/DMARC, SASL protocols
. Ability to integrate into core solutions such as VCF, HPE, SIEM and LDAP/AD.
. Strong troubleshooting skills for mail delivery and server performance issues.
. Scripting experience (eg, Bash, Python) for automation and monitoring.
. Strong at writing technical documentation

Preferred Qualifications:
. Knowledge of high availability, load balancing, and mail queue management.
. Familiarity with email archiving, retention policies, and compliance frameworks.

All of our opportunities require that applicants are eligible to work in the specified country/location, unless otherwise stated in the job description.

Whitehall Resources are an equal opportunities employer who value a diverse and inclusive working environment. All qualified applicants will receive consideration for employment without regard to race, religion, gender identity or expression, sexual orientation, national origin, pregnancy, disability, age, veteran status, or other characteristics.