// #legacy-auth

SASL Authentication Security in Enterprise Mail Servers: Deprecating DIGEST-MD5 and Hardening SMTP AUTH

The GNU SASL CVE-2026-48829 DIGEST-MD5 crash is a reminder that legacy authentication mechanisms in enterprise mail infrastructure carry risk that is often invisible to security teams. A structured review of SASL mechanism configuration in Postfix, Dovecot, and Exchange environments can eliminate entire vulnerability classes while improving authentication security.