Office365 and correct smtp configuration

Hi,

I seems to be unable to configure SMPT correctly to use office365 emails. My server (where the WP runs) is added to the trusted servers in the office365 administration. Anyway I always get “Unable to connect via TLS” error.

Diag:

OS: Linux replikant395 3.16.7-vch1-amd64 #1 SMP Tue Jun 28 13:04:17 CEST 2016 x86_64
PHP: Linux 5.6.22-0+deb8u1 C
PHP Dependencies: iconv=Yes, spl_autoload=Yes, openssl=Yes, sockets=Yes, allow_url_fopen=Yes, mcrypt=Yes, zlib_encode=Yes
WordPress: 4.5.3 cs_CZ UTF-8
WordPress Theme: 4heat.cz (4heat based)
WordPress Plugins: 404 to 301, Block Specific Plugin Updates, CMS Tree Page View, Contact Form 7 Datepicker, Contact Form 7 – reCAPTCHA, Contact Form 7, Google Analytics by MonsterInsights, Media Library Assistant, NextCellent Gallery, Postman SMTP, Server IP & Memory Usage Display, Simple 301 Redirects, Simple Custom Post Order, Smartlook Visitor Screen Recording, Smartsupp Live Chat, TablePress, WordPress SEO, WP Better Attachments, WP Editor
WordPress wp_mail Filter(s): wp_staticize_emoji_for_email
WordPress phpmailer_init Action(s): wpcf7_phpmailer_init
Postman: 1.7.2
Postman Sender Domain (Envelope|Message): 4heat.cz | 4heat.cz
Postman Prevent Message Sender Override (Email|Name): No | No
Postman Active Transport: SMTP (smtp:tls:login://smtp.office365.com:587)
Postman Active Transport Status (Ready|Connected): Yes | Yes
Postman Deliveries (Success|Fail): 0 | 4
Postman PHP LogLevel: 10000
Postman File Locking (Enabled|Temp Dir): No | /tmp

Thanks a lot for taking a look.

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