SpamAssassin Rule: RCVD_IN_DOB
Standard description: Received via relay in new domain (Day Old Bread)
Explanation
The mail was relayed via a server using a domain listed in the DNSBL dob.sibl.support-intelligence.net - which lists domains registered in the last five days.
Further Info
The default scores for this rule can be found in the online list of tests.
See also: URIBL_RHS_DOB DNS_FROM_DOB