If you’ve got an external application that sends messages via your Exchange 2010 server, you might’ve noticed that things have slowed down a bit. The reason for this is because the Exchange 2010 receive connectors have a MaxAcknowledgementDelay setting, that will inform you if the delivery is successful, within a certain time frame. If the timelimit is hit, it then acks the submission.
To disable this you can set your receive connector not to use this feature: Set-ReceiveConnector "Connector Name" -MaxAcknowledgementDelay 0
Further details are available on technet.



Wow! That’s exactly the answer I am looking for! Thanks!
Perfect! Relaying eBlasts slowed to a crawl after moving to Exchange 2010, thought it was Throttling settings but changing those didn’t help, this was it. Thanks!