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Set Up Custom Domain Authentication: DKIM and SPF
Set up your custom domain authentication so campaigns appear to come from your domain. Make your campaigns look more professional and avoid spam folders.
dkim  spf  email  domain  dns 
16 days ago by jennettefulda
Implementing SPF checks in Postfix
Sender Policy Framework (SPF), as defined in RFC 4408, is an e-mail validation system designed to prevent e-mail spam by addressing a common vulnerability, source address spoofing. SPF allows administrators to specify which hosts are allowed to send e-mail from a given domain by creating a specific DNS SPF record in the public DNS. Mail exchangers then use the DNS to check that mail from a given domain is being sent by a host sanctioned by that domain’s administrators.
mailserver  spf  spam  postfix 
19 days ago by dusko
I’ve Got 99 Problems But SPF Ain’t One | Valimail
Partly a sales pitch, but a good overview of the problems with using SPF with cloud emailers.
spf  email  work 
22 days ago by ahall
Publications | Outflank
DoH turning into a Doh! You may begin to hate yourselves...
virus  C2  secondary  communications  channel  beacon  DNS  DoH  HTTPS  SSL  TLS  SPF  security  hacking  pentesting  redteam 
7 weeks ago by asteroza
SPF レコードの例 | なりすまし対策ポータル ナリタイ
7 weeks ago by oppara

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