无法使用phpMailer SMTP发送电子邮件

Question

PHP Script

require '../PHPMailerAutoload.php';

//Create a new PHPMailer instance
//Passing true to the constructor enables the use of exceptions for error handling
$mail = new PHPMailer(true);
try {
 $mail->Port       = 25;    
 $mail->Timeout = 10;
 $mail->isSMTP();   
 $mail->SMTPDebug = 3;
 $mail->CharSet = 'UTF-8'; 
 $mail->Host       = 'mail1.ClientWeb.com';
 $mail->SMTPAuth   = true; 
 $mail->Username   = 'test_mail@ClientWeb.com'; 
 $mail->Password   = 'pwd';  

 $mail->setFrom('from@example.com', 'First Last');
 $mail->addReplyTo('replyto@example.com', 'First Last');
 $mail->addAddress('keprta.martin@gmail.com', 'Martin Keprta');
 $mail->Subject = 'test';

 $mail->msgHTML(file_get_contents('contents.html'), dirname(__FILE__));
 $mail->AltBody = 'This is a plain-text message body';
 $mail->addAttachment('images/phpmailer_mini.png');
 $mail->send();
 echo "Message sent!";
  } catch (phpmailerException $e) {
    echo $e->errorMessage();
  } catch (Exception $e) {
    echo $e->getMessage();
                                     }

Problem description

Client has a script on his server which apparently runs. I am trying to connect to his server which is possible but when I try to send email following error appears

2017-05-07 18:31:57 Connection: opening to mail1.warmacher.com:25, timeout=10, options=array ( ) 
2017-05-07 18:31:57 Connection: opened 
2017-05-07 18:32:07 SERVER -> CLIENT: 
2017-05-07 18:32:07 CLIENT -> SERVER: EHLO localhost 
2017-05-07 18:32:17 SERVER -> CLIENT: 
2017-05-07 18:32:17 SMTP ERROR: EHLO command failed: 
2017-05-07 18:32:17 CLIENT -> SERVER: HELO localhost 

Far as I can understand that connection is estabilished but for some reason email is not send.

Steps I took prior to asking this honorable community

1. Check if security is needed - None
2. Check if port is correct - 25 is correct
3. Check if name/pwd correct - Yes. I can log into webmail on server

Answer 1

There is something wrong with the mail server you're connecting to. If I telnet mail1.warmacher.com 25 , it connects, but does not respond. It doesn't appear to be a greet delay countermeasure, it's just broken. The short timeout you've set doesn't allow the maximum wait (5 minutes) that SMTP permits, though it doesn't appear to help anyway. Your code is fine - you need to get the mail server fixed.

Answer 2

1. Problem caused by unknown postfix server settings.( Basically it is not a problem but a feature )
2. Curret setting does not allow access to postfix from outside of server