Problem: Using Easy WP SMTP , while the configure set up is right it still can not send an email via the “From Email Address”
My case is because of SELinux again.
Solution: ssh your server and enter below command to allow server to send mail:
sudo setsebool -P httpd_can_sendmail 1
Problem: Want to send email via WordPress plugin. I confirmed that server’s port 465 587 is open and enabled. But there is an error saying permission denied issue.
The necessary port is enabled. So after some research the problem is SELinux is enabled.
You can check out https://www.itdailydocumentation.com/?p=357 to disable SELinux.