Connectivity Test
https://ibb.co/hu5FjQ
Diagnostic Test
OS: Linux ******.es 2.6.32-042stab116.2 #1 SMP Fri Jun 24 15:33:57 MSK 2016 x86_64
PHP: Linux 5.6.30 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.8.2 es_ES UTF-8
WordPress Theme: Storefront
WordPress Plugins: Adminimize, Akismet Anti-Spam, Awesome Support, Email Templates, Postman SMTP, WooCommerce Stripe Gateway, WooCommerce, WP-Optimize
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email, Mailtpl_Mailer->send_email_postman
WordPress wp_mail_from Filter(s): Mailtpl_Mailer->set_from_email
WordPress wp_mail_from_name Filter(s): Mailtpl_Mailer->set_from_name
WordPress wp_mail_content_type Filter(s): Mailtpl_Mailer->set_content_type
WordPress phpmailer_init Action(s): Mailtpl_Mailer->send_email
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): | ********.es
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 | Yes
Postman Deliveries (Success|Fail): 0 | 1