Email sent successfully but not being received?

Hi there,

The is very frustrating :-(. I’ve managed to get it into a position setting up Outlook API and the email log says it has been sent fine and I can see that the emails are sending out OK. Lost Password, or New User appear to be logged.

However, the emails are simply not being received? Please help!

Here is the transcript

Mailer: postsmtp
HostName: jitterbyte.com
cURL Version: 7.58.0
OpenSSL Version: OpenSSL/1.1.1
OS: Linux quizzical-fermi 4.15.0-122-generic #124-Ubuntu SMP Thu Oct 15 13:03:05 UTC 2020 x86_64
PHP: Linux 7.3.27 en_US.UTF-8
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=No, zlib_encode=Yes
WordPress: 5.6.1 en_GB UTF-8
WordPress Theme: TheFox
WordPress Plugins: All in One SEO, Code Snippets, Contact Form 7, Google Analytics for WordPress by MonsterInsights, iframe, WPBakery Page Builder, Client Portal by Laura Elizabeth, Login Logo, Popup Maker, Office 365 for Post SMTP Extension, Post SMTP, Slider Revolution, WP Table Builder, ReCaptcha v2 for Contact Form 7
WordPress wp_mail Owner: /var/www/vhosts/senditsecure.net/jitterbyte.com/wp-content/plugins/post-smtp/Postman/PostmanWpMailBinder.php
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, PostsmtpMailer->get_mail_args
WordPress phpmailer_init Action(s): wpcf7_phpmailer_init
Postman: 2.0.21
Postman Sender Domain (Envelope|Message): jitterbyte.com | jitterbyte.com
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: Office365 API (https://amazonses.com:443)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 6 | 0