Testing Email Connections with Telnet

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This is one of the essential troubleshooting tricks that an Exchange administrator needs to know, sending an email using telnet from command prompt. Lets say you’ve just configured a relay connector and want to test it from the server that you wish to allow relay from before you let that server’s owner know that it […]

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NMap 101

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NMap short for Network Mapper is as the name suggests a tool used for mapping a network, but one of the great features is that it shows all the open ports, what services are running on the ports and all sorts of custom outputs. Most versions of Linux I have used already have had nmap install by […]

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