Opportunistic TLS encryption is enabled on email servers that make incoming or outgoing email connections over public network infrastructure.
Topic
Email server transport encryption
Applicable to
all
History
Priority
must
2017
3207 on email servers that make incoming or outgoing email connections over public networkinfrastructure.
Control Text Changed. No public explaination.
2015
Agencies must enable opportunistic TLS encryption as defined in IETF RFC 3207 on emailservers that make incoming or outgoing email connections over public network infrastructure.
2010
Agencies must enable opportunistic TLS encryption as defined in IETF’s RFC 3207 on email servers thatmake incoming or outgoing email connections over public infrastructure.
2008
Agencies should enable opportunistic TLS encryption on incoming and outgoing email connections on email servers.