Laravel - Can't send email with sendmail driver

Question

I have an application that send several emails using the smtp driver. But at some point, and I don't know why, some domains stop receiving email from application.

So, I change the driver to sendmail and change the sent email.

In my mac works fine but when I try to pass it to a windows server I have to change the config sendmail path and returns me an error.

In my app/config.php I change driver smtp to sendmail and sendmail path to 'sendmail' => '\"C:\xampp\sendmail\sendmail.exe\" -t', . Next I go to php.ini and add this:

sendmail_path = "\"C:\xampp\sendmail\sendmail.exe\" -t"

and in .env I also change the driver name.

Now I have this error and I don't understand why:

Process could not be started ['\"C:\xampp\sendmail\sendmail.exe\"' is not recognized as an internal or external command, operable program or batch file.

Anyone can help me with that? First I don't understand why people received email and now don't. and how can resolve this error.

Thank you