При отправке почты через ssmtp возникает ошибка: Sender address rejected: not owned by auth user

`/etc/ssmtp/ssmtp.conf:                            
 TLS_CA_File=/etc/pki/tls/certs/ca-bundle.crt
[email protected]
hostname=smtp.yandex.ru:465
AuthPass=application password
[email protected]
mailhub=smtp.yandex.ru:465
UseTLS=YES
FromLineOverride=NO
RewriteDomain=yandex.ru
Hostname=yandex.ru
Debug=YES

/etc/ssmtp/revaliases:
root:[email protected]:smtp.yandex.ru:465'