Yandex mail not connecting

Hello, I have installed yandex mail before. But this time it does not connect to yandex mail servers. This time I am installing on a website hosted on an AWS server. Is it a problem with AWS? Or is it a plugin issue? Please help.

Note: Yandex mail works without any problems. IMAP and POP settings are active. It also works fine in Outlook setup.

Connectivity Test
https://prnt.sc/19ezsxl

Diagnostic Test

Mailer: postsmtp
HostName: jacarlott.com
cURL Version: 7.77.0
OpenSSL Version: OpenSSL/1.1.1k
OS: Linux server.myco.site 3.10.0-1062.18.1.el7.x86_64 #1 SMP Tue Mar 17 23:49:17 UTC 2020 x86_64
PHP: Linux 7.4.21 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 5.7.2 tr_TR UTF-8
WordPress Theme: Jupiker Tema
WordPress Plugins: Hide My WP Ghost Lite, Admin Menu Editor Pro, AME Branding Add-on, Astra Pro, Premium Starter Templates, Classic Editor, Elementor Pro, Elementor, LiteSpeed Cache, Post SMTP, Template Hero Elementor - Server, Custom Templates Tab For Elementor, Ultimate Addons for Elementor, WooCommerce Dynamic Pricing & Discounts, WooCommerce Cart Abandonment Recovery, WooCommerce, WordPress Toolbar Editor, WPvivid Backup Plugin
WordPress wp_mail Owner: /home/myco/public_html/jacarlott.com/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args
WordPress wp_mail_from Filter(s): ameBrandingEditor->filterFromEmail
WordPress wp_mail_from_name Filter(s): ameBrandingEditor->filterFromName
WordPress phpmailer_init Action(s): PostsmtpMailer->phpmailer_smtp_init
Postman: 2.0.23
Postman Sender Domain (Envelope|Message): jacarlott.com | jacarlott.com
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: SMTP (smtps:plain://smtp.yandex.ru:465)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 0 | 0