exchange 2013 weird forward issue

Greetings I have a very weird issue. We have a shared mailbox being used as a system account and repository for an application. The problem we are having is a certain user is forwarded a message everytime that someone sends an email directly to that mailbox. We ran message tracking logs and verify that the email reaches the system mailbox but CANNOT see where it is delivered to the user. I even ran tracking on all inbound messages to that users mailbox and no trace of it being forwarded to that users mailbox. There are no rules setup when doing get-inboxrule and even used the hidden parameter.

I used an outside email to test and verified it was delivered to the system mailbox but no tracking shows it going to the users mailbox. It did also deliver to the users mailbox. Has anyone ever heard of this before?
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Perhaps the forwarding rule was not set inside the Exchange account but in the mailbox property.

See pictures here:

Can you check the shared mailbox property and see that the Forward to checkbox is checked and the reason you see the email is because the "Deliver message to both forwarding address and mailbox" is unchecked so only the use get a copy of the forwarded email.
techdriveAuthor Commented:
thanks but it was not there either.
Justin YeungSenior Systems EngineerCommented:
how do you forward from the shared mailbox?

if you set the property of the shared mailbox attribute (targetaddress with, it will not hit the mailbox at all, it will just redirect to the email that is specified.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.