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Ensure the postmaster alias is aliased to root
postfix-postmaster-alias · RHEL ≥ 8 · 1 impl
Description
/etc/aliases must alias postmaster to root so system/administrative mail reaches the administrator.
Rationale
If postmaster mail is discarded or misrouted, security-relevant notifications (cron failures, MTA bounces) may be missed.
Check → Remediate
Checkcommand
grep -qiE '^[[:space:]]*postmaster[[:space:]]*:[[:space:]]*root\b' /etc/aliases 2>/dev/null
- expected_exit:
- 0
Remediatemanual
- note:
- Add 'postmaster: root' to /etc/aliases, then run newaliases.
Framework references
STIG
V-281270 / RHEL-10-700670V-257953 / RHEL-09-252060
NIST 800-53
AU-5SI-4
#postfix#aliases#mail#stig