SMTP connect error using phpmailer - php

Question

I am using this code to send emails using smtp:
require 'phpmailer/class.phpmailer.php';
$mail = new PHPMailer(); // create a new object
$mail->IsSMTP(); // enable SMTP
$mail->SMTPDebug = 1; // debugging: 1 = errors and messages, 2 = messages only
$mail->SMTPAuth = true; // authentication enabled
$mail->Host = "sr4.supercp.com";
$mail->Port = 465; // or 587
$mail->IsHTML(true);
$mail->Username = "********";
$mail->Password = "********";
$mail->SetFrom("********");
$mail->Subject = "Test";
$mail->Body = "hello";
$mail->AddAddress("****#gmail.com");
if(!$mail->Send())
{
echo "Mailer Error: " . $mail->ErrorInfo;
echo "<pre>";
echo print_r($mail);
}
else
{
echo "Message has been sent";
}
Getting this error:
2014-08-25 18:53:11 CLIENT -> SERVER: EHLO grabblaw.com
2014-08-25 18:53:11 SMTP ERROR: EHLO command failed:
2014-08-25 18:53:11 SMTP NOTICE: EOF caught while checking if connected SMTP connect() failed. Mailer Error: SMTP connect() failed.
I have spend entire day, but unable to make this work. Please help.
Please refer this url for more error detailed info: http://grabblaw.com/mail_template.php

Answer 1

Similar to this question SMTP error with PHPMailer EHLO not supported
Changing your port to 25 should work:
I tried to telnet:
telnet grabblaw.com 25 //works
telnet grabblaw.com 465 //hangs
telnet grabblaw.com 587 //no response

Answer 2

You're setting:
$mail->Port = 465; // or 587
but there's no accompanying:
$mail->SMTPSecure = 'ssl'; // or 'tls'
So you're trying to send unencrypted data to an encrypted connection, which will not work (it's one of the reasons that SMTP over SSL was deprecated 15 years ago). TLS on 587 is more resistant to this.
Switching to port 25 usually means you're giving up on encryption altogether, which isn't a good solution.