[rt-users] Failed to load valid user when Everyone has the right to CreateTicket

[Drew Barnes]

Check to make sure that address is not a disabled account already on the
system.

Fran Fabrizio wrote:
> Occasionally, I get a
>
> RT could not load a valid user, and RT's configuration does not allow
> for the creation of a new user for this email (user at uab.edu).
>
> even though in this queue, Everyone has the right to CreateTicket.  (There's nothing special about @uab.edu, I just picked that as the latest example - it happens with all sorts of domains) 
>
> Has anyone else seen this?  It's sporadic, once every week or two.  RT 3.6.4
>
>