User account "recognition"

Hi list,

Using RT version 3.0.11

Let’s say following user has privileged account in RT:

Username: Fullname

Email: Fullname@company.com

When creating ticket by E-mail, new account creates automatically (Self Service) with following:

Username: Fullname@company.com

Email: Fullname@company.com

So here is my question:

I’m interested in how to prevent creation of such account and force RT to recognize users by Email, meaning that if privileged account exists in system, then handle incoming requestor as same user, and vice versa.

I believe that such option exists in RT so if anyone experienced please point me to right direction.

Thanks,

Best

Eduard