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Block telnet helo commands

    Question

  • Hi,

     What's the easiest way to block smtp helo commands without affecting mail flow? I currently have an Edge Transport Server sitting behind TMG 2010 and I can directly telnet to port 25 of mail.mydomain.com - I'd like to implement something similar to what Google/Yahoo do (i.e mail.google.com times out)

    Thanks


    IT Support/Everything

    Thursday, January 10, 2013 1:38 PM

Answers