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Exim Global Email Aliases - Postmaster and Abuse

For RFC compliant mailservers (RFC822 6.3, RFC1123 5.2.7, and RFC2821 4.5.1)  you are required to accept mail for postmaster for every domain you host (also accepting abuse@ all domains is considered good practice) the simple way to do this with...

Basic SSH Security

Just a HOWTO to give you a basic insight into deterring SSH brute-force attempts. Nothing is better than a firewall, I am simply just explaining a couple of things you can do to make SSH a tiny bit more secure, I will explain in a later post about...

Email alert on root login

I, Myself as a paranoid sysadmin like to know when people log into any of the servers that I manage, even when my collegues are the people logging in, setting an e-mail alert on root login is in my opinion needed on any server you run, so you know...

Basic Linux Lockdown

This is a very basic list of procedures commonly used to lock down a linux web server, it is incomplete and very brief, when I have enough time I will lay it all out properly and add the missing pieces, hopefully though its of some use to you. ...
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