RFC 6471: Overview of Best Email DNS-Based List (DNSBL) Operational Practices

The rise of spam and other anti-social behavior on the Internet has led to the creation of shared DNS-based lists (DNSBLs) of IP addresses or domain names…

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Outgoing relationships (7 related RFCs)

Normative reference — RFC 2119: Key words for use in RFCs to Indicate Requirement Levels
Normative reference — RFC 1918: Address Allocation for Private Internets
Normative reference — RFC 3927: Dynamic Configuration of IPv4 Link-Local Addresses
Informative reference — RFC 3833: Threat Analysis of the Domain Name System (DNS)
Informative reference — RFC 5735: Special Use IPv4 Addresses
Informative reference — RFC 5156: Special-Use IPv6 Addresses
Informative reference — RFC 5782: DNS Blacklists and Whitelists