We need to use the option "Restrict Login to the Following Users" for a specific domain (@a.colegioser.com), but the chromium os does not allow to do that. When I insert a user account from the domain (@a.colegioser.com), the account is not added in the list of the users.  

Chrome Version       : 53.0.2764.0 (64-bit)
URLs (if applicable) :
Other browsers tested:
  Add OK or FAIL, along with the version, after other browsers where you
have tested this issue:
     Safari:
    Firefox:
         IE:

What steps will reproduce the problem?
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What is the expected result? 


What happens instead?