Limit IMAP access to specified IP range

Hi,
I want to enable IMAP on my Exchange 2010 server, but to restrict the access to that service so that only users from within my domain could use it, and not from outside the organization. Can this be done? Cause I see that I can only restrict the IP address
of the NIC that listens to it.
Thanks!
Lena.

Hi Lena,
If the suggestion from ExchangeITPro is helpful, would you like to mark the reply as an answer?
Have a nice day : )
Thanks
Mavis
Mavis Huang
TechNet Community Support

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