test email sending fail, no smtp debug log

Replies: 0

i was trying out the test email function of wp mail smtp and i got an error. But there’s nothing listed in the smtp debug section. Where else could i check the issue below?

Thanks

Versions:
WordPress: 4.9.6
WordPress MS: No
PHP: 5.6.35
WP Mail SMTP: 1.2.5

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Host: smtp.mandrillapp.com
Port: 587
SMTPSecure: tls
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

Server:
OpenSSL: Yes
SMTP Debug: