WP Mail SMTP Error — CyberPanel - WebHosting Control Panel for OpenLiteSpeed

WP Mail SMTP Error

Hi Guys,

Please help me fix the WordPress email delivery error in WP Mail SMTP plugin. Using cPanel and LiteSpeed Enterprise it worked but when I transferred to CyberPanel and OpenLitespeed it has error. Using SMTP to deliver mail has the following error:
1. Plugin Notice:
Misconfigured server certificate.
This means OpenSSL on your server isn't able to verify the host certificate.
There are a few reasons why this is happening. It could be that the host certificate is misconfigured, or this server's OpenSSL is using an outdated CA bundle.
2. Error Log:
WordPress: 5.7
WordPress MS: Yes
PHP: 7.4.15
WP Mail SMTP: 2.7.0

Mailer: smtp
Constants: No
ErrorInfo: SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
Host: mail.carefy.ph
Port: 465
SMTPSecure: ssl
SMTPAutoTLS: bool(true)
SMTPAuth: bool(true)

OpenSSL: OpenSSL 1.0.2k 26 Jan 2017
Apache.mod_security: No

Mailer: Other SMTP
SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

SMTP Debug:
2021-04-02 02:41:51 Connection: opening to ssl://mail.carefy.ph:465, timeout=300, options=array()

2021-04-02 02:41:51 Connection failed. Error #2: stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:error:14090086:SSL routines:ssl3_get_server_certificate:certificate verify failed [/home/carefy.ph/public_html/wp-includes/PHPMailer/SMTP.php line 387]

2021-04-02 02:41:51 Connection failed. Error #2: stream_socket_client(): Failed to enable crypto [/home/carefy.ph/public_html/wp-includes/PHPMailer/SMTP.php line 387]

2021-04-02 02:41:51 Connection failed. Error #2: stream_socket_client(): unable to connect to ssl://mail.carefy.ph:465 (Unknown error) [/home/carefy.ph/public_html/wp-includes/PHPMailer/SMTP.php line 387]

2021-04-02 02:41:51 SMTP ERROR: Failed to connect to server: (0)

SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting


  • I was able to fix it by doing a Full Back in cPanel and transfer it to Cyberpanel using the commands. https://cyberpanel.net/docs/auto-import-cpanel-sites-to-cyberpanel/
    Before I transfer it the slow way, transfer database and public html.
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