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os_exchange_SMIME_encryption_certificate_overwrite_disable Disable changing the S/MIME encryption settings.

NIST macOS Security Compliance Project iOS 26 Guidance, Revision 3.0 (6262df0)
All changes in this version
first version loaded iOS/iPadOS

Title

Disable changing the S/MIME encryption settings.

Discussion

The iOS device needs some specific configurations for the Exchange setup to meet the minimum requirements.

The usage of S/MIME encryption _MUST_ be configured to set mail signing as the default.

Fix

This is implemented by a Configuration Profile.