Sysadmin Today #38: Email Security

In this episode, I will discuss email security best practices.

Host: Paul Joyner

Show Links

Podnutz Episode discussing Automation

Reverse DNS Checker

SPF, DKIM & DMARC Information

Exchange 2016 Anti-Spam Setup

Exchange 2013 Anti-Spam Setup

Exchange 2010 Anti-Spam Setup

How to Create a rule to prevent spoofing

Preparing for the mandatory use of TLS 1.2 in Office 365

Encrypted Messaging

Ultimate Privacy Guide 

RBL List
Spam Cop:

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2 thoughts on “Sysadmin Today #38: Email Security

  1. I”m curious about the email systems referred to in the TV4 program this evening. Would, in theory, the NSA have the CA self-destructing emails? It seems possible, maybe even probable, that the NSA was hoovering CA during this period, no? If CA assumed that they couldn”t/wouldn”t get caught, those emails might be interesting. “In one exchange Alexander Nix revealed the company used a secret self-destructing email system that leaves no trace. He said: “No-one knows we have it, and secondly we set our… emails with a self-destruct timer… So you send them and after they’ve been read, two hours later, they disappear. There’s no evidence, there’s no paper trail, there’s nothing.”

    1. Interesting. I guess in theory you could have a retention policy to delete all emails after one day or even hours. I bet the users would love that.

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