Solution for ssl error reported by redmine2.3.0 mail server on centos

After redmine2.3.0 and redmine2.3.0 on centos solve the ssl error, redmine2.3.0 was set up, and the configuration of the email server was completed with joy, who knows that there is another problem when I click "send test mail" after Configuration? OH... after redmine2.3.0 and redmine2.3.0 on centos solve the ssl error, redmine2.3.0 was set up, and the configuration of the email server was completed with joy, who knows that there is another problem when I click send test email after configuration, OH MY GOD. The error message is as follows: [php] (wrong argument (Fixnum )! (Expected kind of OpenSSL: SSL: SSLContext) go to the internet and find the solution as follows, you can add this sentence in the mail server configuration (who has always added this sentence before, and who knows it is invalid for 2.3.0): [php] openssl_verify_mode 'none' if it is 2.3.0, add this sentence to solve the problem. [Php] enable_starttls_auto: false It is over!