Results for: "SPF"
Contents (5)
Outlook.com rejects some emails from domains without DMARC
An email sent to an Outlook.com account may bounce even if the sending domain has SPF and DKIM configured. Since…
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Filter Traffic to the Router with nftables and Limit ICMP
A flood targeting the router’s own address can force its CPU to process traffic that should not reach control and…
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What is the origin of the word SPAM?
It is 40 years since the first spam e-mail was sent. Surely most of the readers of this blog had not yet been born, as…
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How to Set up a Fully Functional Mail Server on Ubuntu 16.04 with iRedMail
Setting up your own mail server from scratch on Linux is complex and tedious, until you meet iRedMail. This tutorial…
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Ubuntu servers security: 25 security tools to armor your system
The Ubuntu repositories contain several useful tools for maintaining a secure network and network administration.This security tools include network scanning,attack…
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