https://issues.apache.org/SpamAssassin/show_bug.cgi?id=7129
Bug ID: 7129
Summary: Enhancement: rule to only check MX DNS
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Hardware: All
OS: All
Status: NEW
Severity: enhancement
Priority: P2
Component: Rules
Assignee: [email protected]
Reporter: [email protected]
Currently the rule NO_DNS_FOR_FROM checks for the availability of both DNS
records, A and MX.
We recommend to implement a rule checking for the availability of explicit MX
records only.
Sending mails without having an explicit MX record is technically correct (RFC
5321 specifically allows that). But spammers often use domains with such DNS
entries, thus it would help to flag such mails with points.
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