error pada saat send email

Hello gan mau nanya nih..

Aku kan mau buat reset password dengan email, tapi di .env nya MAIL_DRIVER aku ruba jadi log

 MAIL_DRIVER=log
MAIL_HOST=smtp.mailtrap.io
MAIL_PORT=2525
MAIL_USERNAME=null
MAIL_PASSWORD=null
MAIL_ENCRYPTION=null

pada saat di execute terdapat pesan kayak gini :

Expected response code 250 but got code "530", with message "530 5.7.1 Authentication required "

kira - kira kenapa ya gan ?

Mohon bantuanya