Microsoft Outlook Email bounce back - Delivery Failed with Correct Address FIX

a frustrating problem that is bound to occur when using Microsoft outlook and copying addresses from other emails or using auto complete to send an email.

very common bounce back message below

Delivery has failed to these recipients or distribution lists:

'Joe Avenger'
Microsoft Exchange has been trying to deliver this message without success and has stopped trying. Please try sending this message again, or provide the following diagnostic text to your system administrator.

This is due the issue where when copying an email address from a forwarded email or using auto complete will often email the address mailto:john@home.com instead of john@home.com. It may sound a little stupid but if your 100% sure the address is correct and others are able to send to it.

then Delete the auto complete entries. By typing the first few letters of the email address using the arrow keys until it is highlighted then press the DEL key. You can now retype the address manually and try again.

hope that helps, I've come across this many times I can't recall the specific reason for this issue but deleting the auto complete entry and retyping the address manually has worked for me, hope it works for you