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@SleepyLctl
Last active July 25, 2018 08:53
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SMTP Flags SPF, DKIM, DMARC
################################################ Automatic Checks
$ https://mxtoolbox.com/SuperTool.aspx
################################################ SPF Dig Lookup
$ dig domain.com txt
################################################ DMARC Dig Lookup
$ dig _dmarc.example.org txt
################################################ DKIM Dig Lookup - selector must be known - found in email header - DKIM-Signature
$ dig google._domainkey.example.org
DKIM-Signature: v=1; a=rsa-sha256; d=example.com; s=news;
c=relaxed/relaxed; q=dns/txt; t=1126524832; x=1149015927;
h=from:to:subject:date:keywords:keywords;
bh=MHIzKDU2Nzf3MDEyNzR1Njc5OTAyMjM0MUY3ODlqBLP=;
b=hyjCnOfAKDdLZdKIc9G1q7LoDWlEniSbzc+yuU2zGrtruF00ldcF
VoG4WTHNiYwG
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