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NORS -- CSRIC Best Practices Result

CSRIC Best Practices Result

Detailed Information for the Best Practice: 9-8-8906

Number 9-8-8906
Priority Critical
Description Authentication of Email:
ISPs should authenticate all outbound email using DomainKeys Identified Mail (DKIM) and Sender Policy Framework (SPF). Authentication should be checked on inbound emails; DKIM signatures should be validated and SPF policies verified.
Network Type(s) Internet/Data
Industry Role(s) Service Provider
Keyword(s) Cyber Security;Intrusion Detection;
Reference/Comments See the following document for more information:
More information can also be found at:

Note that the Best Practices in this grouping are primarily aimed at ISPs that provide service to consumer end-users on residential broadband networks, but may be applicable to other users and networks as well.