| Home » Categories » General IT Services » Productivity & Collaboration Tools » Exchange Email and Calendar Services » Frequently Asked Questions (FAQ) » Email Related | 
| My Outlook receive "Undeliverable" message with unknown reason, can this be improved? | 
| Article Number: 457 | Rating: Unrated | Last Updated: Mon, Jan 20, 2014 at 4:06 PM | 
| Some user report that they receive the following error without any detail information, Subject: Undeliverable Delivery has failed to these recipients or groups: Diagnostic information for administrators: Generating server: The cause is the problem is that Outlook failed to process "Undeliverable" message from the SMTP server, users looking for better user experience are advise to set up their Outlook with the native Exchange mode instead of the IMAP/SMTP mode. Details please refer to How to set up an Exchange Account in Microsoft Outlook? | 
| 
							Attachments     There are no attachments for this article. | 
| Related Articles  
										How to set up my Exchange Online email account in an Android device?
										 Viewed 941 times  since  Tue, Apr 9, 2019  
										How to clear the Outlook Email Address Auto Complete Cache?
										 Viewed 7800 times  since  Fri, Feb 24, 2012  
										HKUST WebMail cannot search messages by email address after migrated to Exchange, is there any solution?
										 Viewed 5221 times  since  Mon, Jul 30, 2012  
										Exchange Email: Notes on Special Folders
										 Viewed 6869 times  since  Wed, Jan 4, 2012  
										Can I use specific search in OWA?
										 Viewed 2010 times  since  Wed, Mar 16, 2016  
										After sending to a mailing list contains my email address and CC (copy) to me, only one copy of the message received. Why?
										 Viewed 6244 times  since  Tue, Jun 19, 2012  
										Exchange Email: How to read message header with OWA or Outlook?
										 Viewed 15703 times  since  Fri, Jan 13, 2012  
										I see garbage in my received email body (Microsoft Outlook 2010), what should I do?
										 Viewed 27451 times  since  Fri, May 4, 2012  
										Cannot view pictures in signed email using Outlook for Windows
										 Viewed 2583 times  since  Wed, Dec 12, 2018  
										How to set up automatic cleanup on the Junk-Email folder?
										 Viewed 24359 times  since  Tue, May 8, 2012  | 
