Bounceback issue

[Hoc]

Hello!

I have a really weird issue happening. I have a mailbox that forwards emails to another mailbox. For some reason I am getting a bounceback from JSM with the following

From: bounce@atlassian.net <bounce@atlassian.net>

This message could not be delivered.

I checked this mailbox and there is no where that I can see that its forwarding to JSM at all

I'm not how this is happening. Any ideas?

Thanks!

[Hoc]

Never mind everyone. I spoke to the exchange team on our end and there was a forward that was set on the server itself which is why i couldn't see it on the mailbox rules.