Mail log was empty

I used ojs2.4.8,I found that my email was not sent, and that the mail log was empty. Is my file configuration wrong?Can someone give me a hand?20180913200316 20180913201000
If you see this, please do not skip it. I know little about this system, which makes me unable to start. I have also browsed many similar problems, but I did not get much, I really hope to get your help.
Thank you very much

Hi @xiongfeiyan,

There are a number of questions in our FAQ about troubleshooting email problems in OJS 2.x. Please look at these.

Amanda Stevens
Public Knowledge Project Team