php - SMTP Mail Error on both server and localhost

I have an email account with zoho.com that is configured and running. On GoDaddy, I am hosting my site and have configured my mail such that any mail sent via the website is received at zoho mail. This setup worked fine till last week. Now I am getting errors and I have no idea what triggers them.

I get the following error on GoDaddy server when I try to send a mail to any account:

SMTP -> ERROR: Failed to connect to server: Connection refused (111)
SMTP Error: Could not connect to SMTP host.

AND the following error on localhost for the same script:

SMTP -> ERROR: Failed to connect to server: A connection attempt
failed because the connected party did not properly respond after a
period of time, or established connection failed because connected
host has failed to respond. (10060)

I have tried the following to correct the errors (on both localhost and GoDaddy) by:

• Changed port number to 25,465 and 587





• Changed smtp server from smtp.zoho.com to relay-hosting.secureserver.net




• Changed ssl to tls and vice versa




• Removed the SMTPSecure Parameter altogether




• Increased timeout variable to 1000




• Verified that the mail accounts exist and are up and running




• Verified that mail accounts have valid passwords and usernames.

A working demo can be found here.I have echoed the errors out as well as the message to be sent just for the purpose of this question.

Edit 1 I commented out "$mail->Host="smtp.zoho.com" and got the following error:

SMTP -> FROM SERVER: SMTP -> FROM SERVER: SMTP -> ERROR: EHLO not
accepted from server: SMTP -> FROM SERVER: SMTP -> ERROR: HELO not
accepted from server: SMTP -> ERROR: AUTH not accepted from server:
SMTP -> NOTICE: EOF caught while checking if connectedSMTP Error:
Could not authenticate.

Does this mean that GoDaddy is not authenticating the credentials?

Edit 2: My settings on zoho mail are:

Incoming server: poppro.zoho.com, Port: 995, SSL (POP)
Incoming server: imappro.zoho.com, Port: 993, SSL (IMAP) Outgoing
server: smtp.zoho.com, Port: 465, SSL (POP and IMAP)

Answer

Try Using Following Code:

require_once('class.phpmailer.php');
//include("class.smtp.php"); // optional, gets called from within class.phpmailer.php if not already loaded

$mail = new PHPMailer(true); // the true param means it will throw exceptions on errors, which we need to catch

$mail->IsSMTP(); // telling the class to use SMTP

try {

    //SMTP needs accurate times, and the PHP time zone MUST be set
    //This should be done in your php.ini, but this is how to do it if you don't have access to that
    #require '../PHPMailerAutoload.php';

    //Create a new PHPMailer instance
    $mail = new PHPMailer;

    //Tell PHPMailer to use SMTP
    $mail->isSMTP();
    //Enable SMTP debugging

    // 0 = off (for production use)
    // 1 = client messages
    // 2 = client and server messages
    $mail->SMTPDebug = 3;

    //Ask for HTML-friendly debug output
    $mail->Debugoutput = 'html';

    //Set the hostname of the mail server
    $mail->Host = 'smtp.zoho.com';


    // use
    // $mail->Host = gethostbyname('smtp.zoho.com');
    // if your network does not support SMTP over IPv6

    //Set the SMTP port number - 587 for authenticated TLS, a.k.a. RFC4409 SMTP submission
    $mail->Port = 465;

    //Set the encryption system to use - ssl (deprecated) or tls
    //$mail->SMTPSecure = 'tls';


    //Whether to use SMTP authentication
    $mail->SMTPAuth = true;

    //Username to use for SMTP authentication - use full email address for gmail
    $mail->Username = "care@subillion.com";

    //Password to use for SMTP authentication
    $mail->Password = "care@subillion";


    //Set who the message is to be sent from
    $mail->setFrom('care@subillion.com', 'care@subillion.com');

    //Set an alternative reply-to address
    #$mail->addReplyTo('replyto@example.com', 'First Last');

    //Set who the message is to be sent to
    $mail->AddAddress($touser, $username);

    $mail->Subject = $subject;

    $mail->AltBody = "To view the message, please use an HTML compatible email viewer!";
    $mail->MsgHTML($msg);
    echo $msg;
    //$mail->AddAttachment('img/logo-dark.png');      
    $mail->Send();

    // echo "Message Sent OK
\n";
} catch (Exception $e) {
    // echo $e->getMessage(); //Boring error messages from anything else!
}

?>

EDIT: if still not working then you must have proper configuration settings as below(as example):

Non-SSL Settings
(NOT Recommended)
Username:   jon@domain.com
Password:   Use the email account’s password.
Incoming Server:    mail.domain.com

IMAP Port: 143
POP3 Port: 110
Outgoing Server:    mail.domian.com
SMTP Port: 25
Authentication is required for IMAP, POP3, and SMTP.