How to Troubleshoot when Emails do not drop into CRM

Solution 1: Check the Event Viewer for Errors 

• Log into the Application server and open Event Viewer.
• On the Leftmost side of the window, Expand Window Logs, and Select Application.
• Check the Warnings that are being displayed, they are usually very self-explanatory and will guide you on finding out the root cause of the Issue.

Could be Network related, or Synchronization Failure.

Solution 2: Microsoft CRM Asynchronous Processing Service

• Log into the Application Server and Open Services.
• Search for the Microsoft CRM Asynchronous Processing Service and Restart it.
• Refresh CRM and check if the Items are dropping.

Solution 3: Restart the Application Server

• Log In to the server then Restart the server, once it has restarted.
• Refresh the CRM Browser page.
• Navigate to Services > Activities.
• On the My Activities view, Click the drop down and select Emails > All Emails
• Filter created on date by Sort Newest to Oldest.

If that does not solve the issue, try the other methods below.

Solution 4: Test and Enable Mailbox

• Log into CRM, go to Settings and Click on Email Configuration.
• Click on Mailboxes and Click on your mailbox. 
• The Mailbox page opens, Click on Test and Enable Mailbox.
• Once it is done, on the leftmost side, you will see a section with an Alert Field.
• Check if any error is listed there, if not: Refresh CRM and go to the Queue and check if Mails are dropping.
• If there are any Errors: they are usually very direct and are easy to debug. They will pin point to the Cause.