selamlar wordpress üzerinden yandex mail üzerinde olan mail adresimin smtp ayarları doğru olmasına rağmen  aşağıdaki hatayı alıyorum. Sanırım sunucuda bunu engelleyen bir kural mevcut. Kontol edip işlem sağlarsanız sevinirim.

Versions:
WordPress: 6.5.3
WordPress MS: No
PHP: 8.1.28
WP Mail SMTP: 4.0.1

Params:
Mailer: smtp
Constants: No
ErrorInfo: SMTP Error: Could not connect to SMTP host. Failed to connect to serverSMTP server error: Failed to connect to server
Host: smtp.yandex.com.tr
Port: 465
SMTPSecure: ssl
SMTPAutoTLS: bool(false)
SMTPAuth: bool(true)

Server:
OpenSSL: OpenSSL 1.1.1k FIPS 25 Mar 2021

Debug:
E-posta Kaynağı: WP Mail SMTP
Mailer: Diğer SMTP
SMTP Error: Could not connect to SMTP host. Failed to connect to serverSMTP server error: Failed to connect to server

SMTP Debug:
2024-05-22 22:41:04 Connection: opening to ssl://smtp.yandex.com.tr:465, timeout=300, options=array()

2024-05-22 22:41:04 Connection failed. Error #2: stream_socket_client(): SSL operation failed with code 1. OpenSSL Error messages:error:1416F086:SSL routines:tls_process_server_certificate:certificate verify failed [/home/grafiy/public_html/wp-includes/PHPMailer/SMTP.php line 409]

2024-05-22 22:41:04 Connection failed. Error #2: stream_socket_client(): Failed to enable crypto [/home/grafiy/public_html/wp-includes/PHPMailer/SMTP.php line 409]

2024-05-22 22:41:04 Connection failed. Error #2: stream_socket_client(): Unable to connect to ssl://smtp.yandex.com.tr:465 (Unknown error) [/home/grafiy/public_html/wp-includes/PHPMailer/SMTP.php line 409]

2024-05-22 22:41:04 SMTP ERROR: Failed to connect to server: (0)

SMTP Error: Could not connect to SMTP host. Failed to connect to server