Best Practice Detail

13-8-8907

Service Providers should configure their gateway mail servers to immediately reject undeliverable email, rather than accepting it and generating non-delivery notices (NDNs) later, in order to avoid sending NDNs to forged addresses.

Status: Rollover New

References/Comments: By rejecting undeliverable email, the gateway mail will inform the sending mail server, which can apply local policy regarding whether or not to notify the message sender of the non-delivery of the original message. See the following document for more information: http://www.maawg.org/sites/maawg/files/news/MAAWG-BIAC_Expansion0707.pdf 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.

Historical events:

• Service Providers
• Internet/Data
• Cyber Security
• Intrusion Detection
• CSRIC VII: Rollover New In CSRIC VII