Not creating a user on CC

Hello,

Under RT 4.2, is it possible to not automatically create a user from the CC
field?

We would like that the CCed users receive emails from ticket correspondance
without creating for class user accounts.

In one email thread from 2015, I saw the reference to a variable:
AutoCreateNonExternalUsers.  I am not entirely sure that this is what I
need, but that does not seem to be available in 4.2, correct?


Thanks,
Thierry

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