If a user creates a new ticket via the Web interface, following fields are avaiable:
(Sends a carbon-copy of this update to a comma-delimited list of email addresses. These people will receive future updates.)
(Sends a carbon-copy of this update to a comma-delimited list of administrative email addresses. These people will receive future updates.)
It appears to me that there is a side-effect to specifying “Cc” (and “Admin Cc:”): if any of the specified Cc: email addresses are not existing users in RT, then RT will new user accounts using the email addresses specified.
It’s very easy for the Ticket creator to make a typing mistake – e.g., there is one user who, instead of typing "firstname.lastname@example.org, email@example.com", he typed in “firstname.lastname@example.org@myco.com” in the Cc: field. When he created the ticket, RT created a user called “email@example.com@myco.com”. Or, if the ticket creator entered a wrong email address, it gets created also.
I want to change the behavior such that RT won’t automatically create RT’s accounts for Cc’s that are not existing RT accounts. How do I do that?