My script is dhru and everything works fine and I took the vps. From ovh company, and when I asked about the matter, they told me that there are missing files or they have been bloxed in your VPS. You must contact your VPS support so that they can activate the SMTP feature for you.

Please log in to my VPS account and fix the problem

https://ibb.co/MBq0BhB this mz smtp in me script

It is recommended that you execute the command to check whether you can connect to the mail server
telnet star-unlock.pro 25
This is a problem from the website program to the mail server
Do you want to use the mail server in the app store? If so, please provide the log content

Hello,
It seems that I can connect :
telnet star-unlock.pro 25 

Trying 2xx1:xxxx:701:xxxx::3xxd...
Connected to star-unlock.pro.
Escape character is '^]'.
220 vps-f07d2dae.vps.ovh.net ESMTP Postfix

    What error will be displayed when clicking Test Send?
    Do you want to use the mail server in the app store? If so, please provide the log content

    wcuxunxq

      If you are not using the app store mail server, it is recommended that you consult the server provider, or the mail service provider can help you

      Hello, I am using the mail server from the app store. But it seems that my certificate is expired. Can be this the issue ?