Hi, I'm running Exchange 2007 SP3. An external contact tries to send an email to 3 of my users. 2 of them do not receive the email. Every time this client send email to these 2 users, they never receive email from the external contact. I run Message Tracking Results to see what happen, I can see that we receive the email (eventid RECEIVE, source SMTP), I also see eventId DELIVER, Source STOREDRIV for the user that receive the email. But I see eventId FAIL and source AGENT for the 2 personns that do not receive the email. Any idea to have more specific reason? Thanks in advance David

Hi David, For this issue, I suggest you improve the log level for store Driver, then check the related information on the logs. How to Change Logging Levels for Exchange Processes http://technet.microsoft.com/en-us/library/bb201670(EXCHG.80).aspx Thanks, EvanPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.