Enable Authenticaion on SMTP in Exchange 2010 (Full Version)

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zahoorr -> Enable Authenticaion on SMTP in Exchange 2010 (21.May2015 6:51:12 AM)

Hi there,
Hi i need to enable Authentication on users on using SMTP using port 25. At the moment if i use an SMTP tool from my netowok i can send emails to any user from any user. How can i restrict this So no one can send emails using SMTP tool.How i can restrict and allow some particular users or ip address.
at the moment Any one can use SMTP tool to send emails from within the network, How to prevent it.

thanks.




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