2.1.x Ошибка при отправке Email "Connection could not be established with host "

Привет.
1) Если стоит настройка по умолчанию Screenshot, то письма отправляются и уходят в спам. Настройки DKIM, DMARS, SPF, PTR прописаны, в оригинале письма есть PASS.
2) Если делаю настройку через smtp, ввожу
Host
site.ru
Порт
465 (пробовал 587)
Имя пользователя
mail@site.ru
Пароль
****
Шифрование
SSL
То получаю ошибку
Swift_TransportException: Email to mail@site.ru failed: Connection could not be established with host site.ru [ #0]
src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php:277

Спойлер: Трассировка стека

#0 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/StreamBuffer.php(62): Swift_Transport_StreamBuffer->_establishSocketConnection()
#1 src/vendor/swiftmailer/swiftmailer/lib/classes/Swift/Transport/AbstractSmtpTransport.php(113): Swift_Transport_StreamBuffer->initialize(Array)
#2 src/XF/Mail/Mailer.php(274): Swift_Transport_AbstractSmtpTransport->start()
#3 src/XF/Mail/Mail.php(395): XF\Mail\Mailer->send(Object(Swift_Message), Object(Swift_SmtpTransport), NULL, true)
#4 src/XF/Service/User/AbstractConfirmationService.php(85): XF\Mail\Mail->send()
#5 src/XF/Service/User/AbstractConfirmationService.php(63): XF\Service\User\AbstractConfirmationService->sendConfirmationEmail()
#6 src/XF/Service/User/Registration.php(369): XF\Service\User\AbstractConfirmationService->triggerConfirmation()
#7 src/XF/Service/User/Registration.php(291): XF\Service\User\Registration->sendRegistrationContact()
#8 src/XF/Service/ValidateAndSavableTrait.php(40): XF\Service\User\Registration->_save()
#9 src/XF/Pub/Controller/Register.php(419): XF\Service\User\Registration->save()
#10 src/XF/Mvc/Dispatcher.php(321): XF\Pub\Controller\Register->actionRegister(Object(XF\Mvc\ParameterBag))
#11 src/XF/Mvc/Dispatcher.php(248): XF\Mvc\Dispatcher->dispatchClass('XF:Register', 'Register', Object(XF\Mvc\RouteMatch), Object(XF\Pub\Controller\Register), NULL)
#12 src/XF/Mvc/Dispatcher.php(100): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(XF\Pub\Controller\Register), NULL)
#13 src/XF/Mvc/Dispatcher.php(50): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#14 src/XF/App.php(2177): XF\Mvc\Dispatcher->run()
#15 src/XF.php(390): XF\App->run()
#16 index.php(20): XF::runApp('XF\\Pub\\App')
#17 {main}

Спойлер: Содержимое запроса

array(4) {
["url"] => string(18) "/register/register"
["referrer"] => string(20) "https://site.ru/"
["_GET"] => array(0) {
}
["_POST"] => array(14) {
["username"] => string(0) ""
["c0e9d9c2eae83503a822d7b291ef96c9b4d560a6"] => string(8) "name"
["eb90dd1f04393e2cab94a69621a3a496b3268558"] => string(0) ""
["8b67d318cfae82eddefdf2e78beb7382f5dd0237"] => string(19) "mail@site.ru"
["email"] => string(0) ""
["caa30e61a1d04c75424d7a93feb1f6c6a617e141"] => string(8) "********"
["g-recaptcha-response"] => string(334) "03AOLTBLTBJg8QbsFeSAbtr-4wSY6LQhbZ47oXuSJgeg0w6tMbUDjPtUQOGdKJjZSYDjV26kEhwmIxkrnUCKUWPuyAJF6aN9ADgaTPK8tAxB16yxhfXze29g6e8zv6Drq8pMwoCsTCqtIDoYwHYvVBdtMpOMrRirVqUUl9iWZWWCzmCcg-Mq_vwohRGOf-TK_7cku8cnXxA2iRlwbrmNzslA4_8_UBsSjg2anrbVnEy4On3r8tlFEA-f8g9svCAZvlWKqexPh6eV2Utbm8Cai_8aq69zx4I3lfK_sXhi3ljGDMjtcKPsioenFHqvFBKu2I7uTkq_LfZhFk"
["accept"] => string(1) "1"
["reg_key"] => string(16) "nihU7vi2X-KYGyWB"
["07d563d52fcb0d193e3e6194f2cd4b8730e4bd09"] => string(13) "Europe/Athens"
["_xfToken"] => string(8) "********"
["_xfRequestUri"] => string(1) "/"
["_xfWithData"] => string(1) "1"
["_xfResponseType"] => string(4) "json"
}
}

Как с ею бороться?
Испольую впс, панель Brainy
спасибо.

 

Нет варианов? (((