how can i prevent sending emails using telnet from outside

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Language: English
Channel Number: 12697460
Article Number: 725
Date: January 31, 2014, 1:43 pm
URL: http://social.technet.microsoft.com/Forums/en-US/c6a4517d-cbd3-451e-a8c4-3579a213dd25/how-can-i-prevent-sending-emails-using-telnet-from-outside?forum=exchangesvrsecuremessaging
GUID: http://social.technet.microsoft.com/Forums/en-US/c6a4517d-cbd3-451e-a8c4-3579a213dd25/how-can-i-prevent-sending-emails-using-telnet-from-outside?forum=exchangesvrsecuremessaging