https://bz.apache.org/SpamAssassin/show_bug.cgi?id=8340
Bug ID: 8340
Summary: DMARC avoidance
Product: Spamassassin
Version: 4.0.2
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Private
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: Undefined
On SpamAssassin-4.0.2-rc1 when the e-mail field "From:" contains space DMARC
check doesn't work and the spam/phishing emails are not blocked via
DMARC_REJECT rule.
Here's an example:
The following doesn't trigger the DMARC (note the space between no reply)
From: companyname <no [email protected]>
This works as expected and match DMARC_REJECT
From: companyname <[email protected]>
Some of the spam/phishing e-mails start to use this technique to avoid the
DMARC.
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