{4}: The message in the queue has expired. The sending server tried to relay or deliver the message, but the action was not completed before the message expiration time occurred. This non-delivery report may indicate that a message header limit has been reached on a remote server or that some other protocol timeout occurred during communication with the remote server. This code typically indicates an issue on the receiving server. Verify the validity of the recipient address, and verify that the receiving server is configured to receive messages correctly.
The message could not be delivered because you do not have create permissions on this folder or it is only available to folder ...
The message could not be received from domain-secured domain %1 because of a configuration error on Receive connector %2. ...
The message could not be redirected to an alternate-recipient because that recipient had previously redirected the message ...
The message failed to be submitted because the storage limit for the mailbox that is submitting the message has been exceeded. ...
The message in the queue has expired. The sending server tried to relay or deliver the message, but the action was not completed ...
The message is too large for the local quota. For example, a remote Exchange user may have delivery restrictions set with ...
The message reached the recipient's e-mail system, but delivery was refused. Attempt to resend the message. If it still fails, ...
The message send request is invalid because the collection sync state could not be found for the message ID sent in the request. ...
The message submitted by '{4}' to '{3}' appears to be stuck on Exchange gateway server {2}. Further analysis is necessary ...