Have many users belonging to multiple distribution groups, if emails are sent to all the distribution groups how can I stop the external recipients receiving duplicate emails - can this be stopped at the server level?
Short answer is that you cannot.
Internally Exchange can track the message and ensure that recipients only receive a single copy. Unfortunately it cannot do the same for external recipients as each group
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This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
In this video we show how to create a mailbox database in Exchange 2013. We show this process by using the Exchange Admin Center.
Log into Exchange Admin Center.: First we need to log into the Exchange Admin Center.
Navigate to the Servers >> Data…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online.
The email signature template has been downloaded from: