Troubleshooting Error 404 in CRM's Email Router Configuration

This article explains how to troubleshoot the below error message received when testing Incoming access in CRM's Email Router Configuration Manager:

Incoming Status: Failure - The remote Microsoft Exchange e-mail server returned the error "(404) Not Found". This user or queue does not have a mailbox. Create a mailbox and try again. The remote server returned an error: (404) Not Found.

The first thing to check is credentials, make sure you typed in the username, password and domain for the user properly.  Verify and re-type these in the Incoming profile.

If you are still receiving the error, ensure that you can log into Outlook or Outlook Web using the credentials specified in the Incoming Configuration.

If this does not work, compare the email address that you set up on the User or Queue in CRM with the username that set in the Router's Incoming Configuration Credentials.  If the portion of the email address before the @ symbol does not match the domain login name, you could be experiencing the issue identified in this article:

http://social.microsoft.com/forums/en-US/crm/thread/8dabcc12-3453-468c-9094-c58024190789/

For example if your Incoming Routing Profile is set to log in as contoso\askus, and the queue is set up with an email address of info@contoso.com, the router may be having a problem matching up the accounts.  You can test this out by changing the address in CRM to askus@contoso.com and then test to see if this resolves the error.

You may have to do some re-configuring within Active Directory and Exchange in order to get things working as you would like them to.

 

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