No outbound route between this site and the Internet on Port 587 and Port 25

I have installed Postman with KNews. When sending a test email, I have the following report:

? ?? Port 443 can be used with the Gmail API.
? ?? Port 465 can be used for SMTP to smtp.gmail.com.
? No outbound route between this site and the Internet on Port 587.
? No outbound route between this site and the Internet on Port 25.
? ?? Port 443 can be used with the SendGrid API.
? ?? Port 443 can be used with the Mandrill API.

My web site host is OVH.

Thank you for help.

OS: Linux webd299.20gp.ha.ovh.net 3.14.33-grsec-hosting-web-3.14 #1 SMP Wed Feb 25 15:03:06 UTC 2015 x86_64
PHP: Linux 5.4.45 fr_FR.UTF-8
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.4.1 en_EN UTF-8
WordPress Theme: Canvas
WordPress Plugins: BackWPup, BSK PDF Manager, Canvas Extension – Mobile Menu Customizer, Google Analytics Dashboard for WP, Jetpack by WordPress.com, K-news, Login LockDown, NextGEN Plus by Photocrati, NextGEN Gallery by Photocrati, pootle page builder for WooCommerce, pootle page builder, Postman SMTP, Regenerate Thumbnails, Shortcodes Ultimate, WPML Multilingual CMS, Websimon Tables, WooCommerce Cart Tab, WooCommerce Customizer, Booster Plus for WooCommerce, Booster for WooCommerce, WooCommerce Multilingual, WooCommerce, WooSidebars, WooThemes Helper, Wordfence Security, Yoast SEO, WP-Optimize, WP Simple Anchors Links, WPML CMS Nav, WPML Media, WPML Sticky Links, WPML String Translation, WPML Translation Management
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): vivierboats.com | vivierboats.com
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: Default (smtp:none:none://localhost:25)
Postman Active Transport Status (Ready|Connected): No | No
Postman Selected Transport: SMTP (smtps:oauth2://smtp.gmail.com:465)
Postman Selected Transport Status (Ready|Connected): No | Yes
Postman Deliveries (Success|Fail): 0 | 0

Kind regards

https://www.ads-software.com/plugins/postman-smtp/