Question:How To Add IP Range To Exchange Relay

This article will show you how to add IP Range to a existing SMTP Relay on Exchange 2007, 2010 and 2013.

To add the IP range:

Open Exchange Server SMTP Relay -> Double Click on the SMTP Relay connector – > Network Tab

Click add in the lower Panel


To add a custom range type the range as the pic below.



To add the entire subnet.