Email processing log failed "You don't have permission to access this service space."

[Alejandro K_ Brown]

Hello!
We have JSM pulling from 3 different 365 Exchange inboxes for 3 Spaces.

Member "B" has admin access to 2 JSM spaces for his teams.
But on the 3rd IT Space, user "B" is a customer.

When his emails are sent to his 2 team's emailboxes, they are picked up and processed by JSM email and tickets are created in his 2 Spaces normally.

But when he sends an email to the inbox of the 3rd Space, the 3rd Space's email processor is giving a FAILED error with this information:
"You don't have permission to access this service space."



Where could I have maybe restricted access to his email address in the 3rd Space?
I don't remember doing anything like that.

I see in the [Space > Access > People and access} page that their email is there and has the "Service Desk Customers" role, like every other member that emails the 3rd Space.
Every other member in the company can successfully send the 3rd Space an email and have a ticket created.

Thank You kindly in advance and be well!

[John Funk]

Hi Alejandro,

Is there a portal form also for the 3rd project? And if yes, is user B able to create a ticket using it? Or simply use the Permission Helper to see if user B has Browse Project and Create Issue permissions. 

Is email out of the box enabled in the 3rd project? And if yes, is user B able to email that address and create a ticket?