Opencart - Journal Theme checkout email validation

Hi to Opencart Community forum

We are wokring on a project with Opencart version 2.1.0.2 and Journal Theme. We have configured mail settings so it can work with Mail Protocol 'SMTP' and the rest fields regarding our Gsuite gmail account.(see attached image)
Although everything is working properly we have noticed that some of our order confirmation emails they don't sent in our customers and we are not receiving them as store as well.
We have tried to check the issue and we have noticed that these emails they had a 'space' within customer's email field, for example name@hotmail. com or wrong syntax like name@.com In these Cases we receive this error
We have tested in fresh Installation of Openacrt 2.1.0.2 to reject that this is Journal Theme related and we can confirm that it displays the same error as well in a fresh installation of Opencart version.

We would like to ask if anyone knows this error or if it is a bug of Opencart?
Thanks in Advance

We are wokring on a project with Opencart version 2.1.0.2 and Journal Theme.

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I am really sorry. My Mistake. Is it possbile to delete it ? i 've created a new one in OpenCart 2.0 Support