Smtp Connect() Failed. Message Was Not Sent.Mailer Error: Smtp Connect() Failed

Message could not be sent.Mailer Error: SMTP connect() failed

Just for sake of other that use az.pl here is changed script that works (without tls and with commented out $mail->isSMTP();)

<?php
    $name = $_POST['nick'];
    $visitor_email = $_POST['email'];
    $visitor_tel = $_POST['tel'];
    $message = $_POST['msg'];
  require 'PHPMailerAutoload.php';

require_once('class.phpmailer.php');    // dodanie klasy phpmailer
require_once('class.smtp.php');    // dodanie klasy smtp
$mail = new PHPMailer();    //utworzenie nowej klasy phpmailer
$mail->isSMTP();
$mail->Host = "mailng.az.pl";    //adres serwera SMTP wysyłającego e-mail 
$mail->Mailer = "smtp";    //do wysłania zostanie użyty serwer SMTP
$mail->SMTPAuth = true;    //włączenie autoryzacji do serwera SMTP
$mail->Username = "";    //nazwa użytkownika do skrzynki e-mail
$mail->CharSet = 'UTF-8';
$mail->From = "";    //Pełny adres e-mail
$mail->FromName = "Formularz kontaktowy";    //imię i nazwisko lub nazwa użyta do wysyłania wiadomości
$mail->Password = "";    //hasło użytkownika do skrzynki e-mail
$mail->Port = 587; //port serwera SMTP 
$mail->Subject = "Nowe zlecenie: $visitor_email";    //Temat wiadomości, można stosować zmienne i znaczniki HTML
$mail->Body = "Nazwa zleceniodawcy: $name \n";
 $mail->Body .="Email kontaktowy: $visitor_email \n";
 $mail->Body .=   "Telefon kontaktowy: $visitor_tel\n";
  $mail->Body .=  "Zlecenie: $message";  //Treść wiadomości, można stosować zmienne i znaczniki HTML 
$mail->SMTPSecure = '';    // 
$mail->SMTPAutoTLS = false;   //wyłączenie TLS
$mail->AddAddress ("","");    //adres skrzynki e-mail oraz nazwa
                                                //adresata, do którego trafi wiadomość
if(!$mail->send()) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    header('Location: emailsent.html');
}  
?>

Mailer Error SMTP connect() failed

Your code is correct except few things. I edited your code and the message get sent. Also check whether your username and password is correct or not as I tried with my username and password.And also check did you include the class.phpmailer.php.

<?php
 require 'PHPMailerAutoload.php';

$mail = new PHPMailer();

//$mail->SMTPDebug = 3;                               // Enable verbose debug output

$mail->isSMTP();  
$mail->Mailer = "smtp"; 
$mail->SMTPDebug = 1;
 $mail->SMTPAuth = true;                                   // Set mailer to use SMTP
$mail->Host = 'smtp.gmail.com';  // Specify main and backup SMTP servers
$mail->SMTPAuth = true;                               // Enable SMTP authentication
$mail->Username = 'mygmail@gmail.com';                 // SMTP username
$mail->Password = 'password';                           // SMTP password
$mail->SMTPSecure = 'tls';                            // Enable TLS encryption, `ssl` also accepted
$mail->Port = 587;                                    // TCP port to connect to

$mail->setFrom('mymail@gmail.com', 'Mailer');
$mail->addAddress('sendtomail@gmail.com', 'Joe User');     // Add a recipient
//$mail->addAddress('ellen@example.com');               // Name is optional
//$mail->addReplyTo('info@example.com', 'Information');
//$mail->addCC('cc@example.com');
//$mail->addBCC('bcc@example.com');

//$mail->addAttachment('/var/tmp/file.tar.gz');         // Add attachments
//$mail->addAttachment('/tmp/image.jpg', 'new.jpg');    // Optional name
$mail->isHTML(true);                                  // Set email format to HTML

$mail->Subject = 'Here is the subject';
$mail->Body    = 'This is the HTML message body <b>in bold!</b>';
$mail->AltBody = 'This is the body in plain text for non-HTML mail clients';

if(!$mail->send()) {
    echo 'Message could not be sent.';
    echo 'Mailer Error: ' . $mail->ErrorInfo;
} else {
    echo 'Message has been sent';
}
?>

SMTP connect() failed PHPmailer - PHP

You need to add the Host parameter

$mail->Host = "ssl://smtp.gmail.com"; 

Also, check if you have open_ssl enabled.

<?php
echo !extension_loaded('openssl')?"Not Available":"Available";

PHP Mailer error: Message could not be sent.Mailer Error: SMTP connect() failed

Your hosting company, one.com, blocks outgoing mail ports intentionally to restrict malicious PHP scripts. The send.one.com address is meant for external mail clients such as your mobile phone, email client, etc. and not for internal mailing scripts from your website.

As per their support document concerning sending emails from your website, you must change the host to their internal SMTP address, mailout.one.com - since this is an internal relay, you must also use port 25 and disable any security such as TLS or SSL. You must also disable authentication.

Here is the correct configuration:

$mail->isSMTP();                                      // Set mailer to use SMTP
$mail->Host = 'mailout.one.com';  // Specify main and backup SMTP servers
$mail->SMTPAuth = false; // Authentication must be disabled
$mail->Username = 'myemailhidden';
$mail->Password = ''; // Leave this blank
$mail->Port = 25;                                    // TCP port to connect to

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