Hello,

SMTP is tested with mailtrap.io and Helo.

If app gives success message that mean the command was executed and if mail not delivered that might be something with smtp/mail server.

I suggest to do testing with mailtrap.io to know if it is working before trying any other solutions. There are smtp service provider like aws, mailgun, sendgrid, socketlabs and many more.

Thank you

I allready tested with Mailtrap.io and return "connection failed"
Can you please read again my question?
It is the 3rd time I ask for a solution. I do all tests, but SMTP function do not work.

Hello,

Let me know your install link and admin account details so that I can check.

Thank you

https://geniales.eu.org/ventas/
default credentials you provide

Hello,

This something to do with server. I guess it your server who is not allowed connection to SMTP. Please check with your server admin and ask them why you can't use SMTP. You can provide them this link https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting#smtp-error-could-not-connect-to-smtp-host for reference.

I have checked and getting SMTP connect() failed error on your install. The demo is working fine. Your download and demo are exact same files. If you have installed it locally, where SIM giving success message, you can try mailtrap.io

I can't be of any help with server as I have no knowledge of them but if any issue due to code I will be happy to help.

Thank you