Senior RHEL & Postfix Mail Architect

Entoss Technologies; Riyadh; On-site; SAR 120,000 - 240,000; Full time

Job summary

Entoss Technologies is seeking an experienced Linux administrator to install, configure, monitor, and troubleshoot RHEL systems and Postfix mail servers. The role involves configuring SMTP relay, TLS/SSL, SASL authentication, and sender/recipient restrictions to ensure secure mail delivery.

Ideal candidates have 5–8 years of Linux administration, strong RHEL expertise, and experience with DNS/DKIM/DMARC. Enterprise Linux environment experience and shell scripting are highly valued.

Qualifications

• 5–8 years of Linux administration experience.
• Strong hands-on experience with RHEL.
• Experience with Postfix, SMTP, and SMTP relay.
• Knowledge of TLS/SSL and SASL authentication.
• Mail logging and sender/recipient restriction configuration.
• Experience with DNS (MX, SPF, DKIM, DMARC).
• Shell scripting.
• Experience in enterprise Linux environments.

Responsibilities

• Install, configure, administer, monitor and troubleshoot RHEL systems and Postfix mail servers.
• Configure SMTP relay, TLS/SSL, SASL authentication, and sender/recipient restrictions.
• Optimize and ensure secure, reliable, high-performing mail infrastructure and provide operational support.

Skills

Linux administration

RHEL

Postfix

SMTP

TLS/SSL

SASL

Mail logging

Troubleshooting

Shell scripting

DNS

MX records

SPF

DKIM

DMARC

Job description

Entoss Technologies is seeking an experienced Linux administrator to install, configure, monitor, and troubleshoot RHEL systems and Postfix mail servers. The role involves configuring SMTP relay, TLS/SSL, SASL authentication, and sender/recipient restrictions to ensure secure mail delivery.

Ideal candidates have 5–8 years of Linux administration, strong RHEL expertise, and experience with DNS/DKIM/DMARC. Enterprise Linux environment experience and shell scripting are highly valued.