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Whilst checking out Steve Lamb and Kathryn Tewson/Steve Riley‘s articles in the November/December issue of TechNet magazine, I came across a link to an article by R’ykandar Korra’ti asking how simple is SMTP? I remember having great fun sending SMTP directly by telneting into a server when I first learnt about Exchange Server back in 1996 and you can read how to do it. Then, just because I can, I sent myself a mail using a telnet connection to my ISP’s relay.