I have a user reporting that emails from a certain user are not making it to him. The server rejecting the email is a SBS 2011. I checked the email logs in Untangle spam filter (which sits before the exchange as a firewall and Spam filter) and the emails make it to the Untangle. Here is the log from Untangle
The sending user is from rogers.com which is a yahoo email service
The reject email that the sending user got says this
Sorry, we were unable to deliver your message to the following address.
Message expired for domain featurefoods.ca