MS CRM 4.0 Email Messages Fail to Send

PROBLEM:
  • Email messages fail to send in MS CRM 4.0, with an information bar appearing near the title in the email showing error "The message has not yet been submitted for delivery". 
  • Sometimes the email sends after a long time, but it may not send at all 
  • This can happen while using either the web client or the Outlook 2007 client and it does not matter whether the emails were created by the user or a workflow. 
  • Occurs when the user is set to send email through the email router. 
  • When you look at the email router service on the server, it has stopped. If you try to re-start the service, it might start but then immediately stop or it might not start at all. 
  • None of the rollups fix the problem. 
  • Server is running Windows 2003 family, including SBS2003. 


SOLUTION THAT WORKED FOR ME:

Rename or delete the Microsoft.Crm.Tools.EmailAgent.SystemState.xml file, which is usually located in C:\Program Files\Microsoft CRM Email\Service folder.

This was sourced from http://www.interactivewebs.com.au/DesktopModules/iCRMKnowledgeBase/Article2PDF.aspx?id=50&ModuleID=2349

who derived their elegantly written solution from http://crm.davidyack.com/journal/2008/2/10/the-e-mail-router-service-could-not-run.html



OTHER POSSIBLE SOLUTIONS: