History

Priority

must

Mar 2019

Removed

Security control 1368 was merged with security control 0565.

Feb 2019

Unmarked emails or emails marked with an unrecognised or invalid protective marking are prevented from being sent to the intended recipients by blocking them at the email server.

2015

Agencies must prevent unmarked emails or emails marked with an unrecognised or invalidprotective marking from being sent to the intended recipients by blocking the email at theemail server.