troubleshooting Question

DMARC and SPF not protecting as expected.

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mbkitmgrFlag for Australia asked on
AntiSpamEmail ServersDNSEmail Protocols
6 Comments1 Solution205 ViewsLast Modified:
Is use DMARC and SPF to protect my domain, however a client recently became infected with malware and propogated the malware via spoofed email.  Now clients of mine are receiving mail addressed as me.  The question is how, what have I missed here.

Details
DMARC Record
v=DMARC1; p=none; rua=mailto:helpdesk@mydomain,mailto:7ffa0582@mxtoolbox.dmarc-report.com; ruf=mailto:My.name@mydomain,mailto:7ffa0582@forensics.dmarc-report.com; fo=1

SPF
v=spf1 +a +mx +ip4:M111.111.111.111 ~all
where
  • IP is my public IP address
  • MX is my cload spam filter provider.
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