When attempting to send an email to
a large amount of recipients, you may see the following error;
This message wasn’t delivered to anyone because there are
too many recipients, the limit is {number}. This message has {number}
recipients
To check what the limit is set to
launch the Exchange Management Shell, and ecxecute the following command;
Get-TranportConfig
To raise the limit (in this example
to 2000) use the following command;
Set-TranportConfig
-MaxRecipientEnvelopeLimit 2000