cognito pre-signup

Question

Hello  
  
I try to put a condition to only allow email addresses from my own domain to sign up for the cognito user pool.  I tried the pre-signup trigger and a lambda function to check the information passed;however I was able to automatically confirm users with email addresses from my own domain but other domain email addresses were still accepted as unconfirmed.  
Is there a way to stop the processes if the email provided is from a different domain?  
  
thanks  
RT

Answer

I found out what i needed.  
On the else section of my code when the domain does not match, I needed to return the callback with the error.

cognito pre-signup

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