ERROR: "452 4.5.3 Too many recipients" in SMTP logs (4343753)

The following error may be displayed in the Exchange SMTP logs when sending an email from Notes to Exchange when there are more than 200 recipients (default) in the message; "452 4.5.3 Too many recipients".

When creating a new receive connector on Exchange 2010 for the Coexistence Manager for Notes (CMN) console it defaults to a value of 200 for MaxRecipientsPerMessage

Increase the value of the MaxRecipientsPerMessage to a value that will be suitable for the environment

For more information regarding Exchange 2010 receive connectors

http://technet.microsoft.com/en-us/library/bb125139.aspx