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#LearnedIT: IT Security Foundations: Protecting Our Email

Specifically, the Understanding Email Protection submenu. Here is the link to the course in full.

Kubernetes and Ubuntu stuff is still happening, but I keep you on your toes here.

Did you expect that?

A lot of this is review so I'll note the parts we should know.



DNS is for email delivery and spam protection.

A file contains malware? Use virustotal to detect malicious files or URLs.


Reddit's clean. The real viruses are the users.

Email reputation checker? Spamhaus to keep track of emerging and traveling cyber-threats.

SPF is Sender Policy Framework, and it lets a domain owner pick where to send an email from, and prevents forgery by validating email and placing it in a SPF DNS record. Thanks ReturnPath!

Pointer Records are also Spam Filters and reverse lookup, that address the IP address to the name.

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