We help IT Professionals succeed at work.

Outlook mail is delivered to wong internal mailbox while OWA delivers fine

Last Modified: 2018-10-04
Hi Experts
I am stuck on a problem with outlook sending to wrong internal mail address.

Mail environment is Office 365/Exchange online
On a shared mailbox I deleted a mail alias and added the same mail alias to another user's mailbox.

shared mailbox: abc@abc.com
User mailbox: def@def.com

shared mailbox: abc_old@abc.com
User mailbox: renamed from def@def.com to abc@abc.com

The problem is that when I send an email from outlook 2016 to abc@abc.com it is delivered to abc_old@abc.com
But if I send send the email from webmail it is delivered correctly to abc@abc.com

And email from my colleague end up in the same wrong mailbox, so the problem is not local to my outlook 2016.
I am thinking that there is something in outlook that is not updating correctly.
atb Anker
Watch Question

System Administrator / Postmaster
This one is on us!
(Get your first solution completely free - no credit card required)


Thanks for the comment.
It appears that outlook was very slow to update it own auto-completion or what ever it was.

Gain unlimited access to on-demand training courses with an Experts Exchange subscription.

Get Access
Why Experts Exchange?

Experts Exchange always has the answer, or at the least points me in the correct direction! It is like having another employee that is extremely experienced.

Jim Murphy
Programmer at Smart IT Solutions

When asked, what has been your best career decision?

Deciding to stick with EE.

Mohamed Asif
Technical Department Head

Being involved with EE helped me to grow personally and professionally.

Carl Webster
CTP, Sr Infrastructure Consultant
Empower Your Career
Did You Know?

We've partnered with two important charities to provide clean water and computer science education to those who need it most. READ MORE

Ask ANY Question

Connect with Certified Experts to gain insight and support on specific technology challenges including:

  • Troubleshooting
  • Research
  • Professional Opinions
Unlock the solution to this question.
Join our community and discover your potential

Experts Exchange is the only place where you can interact directly with leading experts in the technology field. Become a member today and access the collective knowledge of thousands of technology experts.

*This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.


Please enter a first name

Please enter a last name

8+ characters (letters, numbers, and a symbol)

By clicking, you agree to the Terms of Use and Privacy Policy.