root=cooltech.main0@gmail.com
mailhub=smtp.gmail.com:587
RewriteDomain=gmail.com
Hostname=cooltech.main0@gmail.com
UseTLS=YES
UseSTARTTLS=Yes
AuthUser=cooltech.main0@gmail.com
AuthPass=secret_password
FromLineOverride=yes

ssmtp: Cannot open smtp.gmail.com:587

TLS_CA_File=/etc/pki/tls/certs/ca-bundle.crt

ssmtp: Authorization failed (534 5.7.14  https://support.google.com/mail/answer/