MTA developers: allow use of domain DNSBLs at the SMTP level
ID: 1aafdca9-f84c-59ec-b053-31a2c178c116
STIX ID: report--1aafdca9-f84c-59ec-b053-31a2c178c116
Feed Name: The Spamhaus Project
Threat Score
This report analyzes an active spam campaign by mapping sending IPs to reverse-DNS hostnames and grouping recently bulk-registered domains (via Namecheap) that appear to belong to the same actor, and recommends blocking the domain family at the SMTP level (PTR/HELO/MAIL FROM checks) to prevent deliveries before content is transmitted.
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