phpmailer - The following SMTP Error: Data not accepted

Question

I'm trying to figure out this issue for 6 hours. But there is nothing to make sense. Here is the scenario; There is a well formatted HTML template.

$mail_body = '     <b>Message Num :</b> 769<br />     <b>Message Date :</b> 2013-04-08 09:03:21<br />     <b>Name :</b> John Doe<br />     <b>Phone :</b> 123456789<br />     <b>E-mail :</b> [email protected]<br />     <b>Message :</b> Here is the message info<br /> '; 

Here is the array of recipients' mails;

$recipients = array("[email protected]","[email protected]"); 

Everything looks fine and email ready to send.Here is the phpmailer config;

$mail = new PHPMailer();  $mail->IsSMTP(); $mail->From = "[email protected]";  $mail->FromName = "TEST"; $mail->WordWrap = 50;  foreach($recipients as $mail_add) {     $mail->AddAddress($mail_add); } $mail->IsHTML(true); $mail->Subject = "TEST Subject"; $mail->Body = $mail_body; if(!$mail->Send()) {     echo $mail->ErrorInfo; } else {          echo "Mail sent..."; } 

Everything is same when I test it. But sometimes email was sent. Sometimes it was not sent. Give me the following error : The following SMTP Error: Data not accepted.

I hope I explained

Answer 1

your server dosen't allow different sender and username you should config: $mail->From like $mail->Username

Answer 2

For AWS users who work with Amazon SES in conjunction with PHPMailer, this error also appears when your "from" mail sender isn't a verified sender.

To add a verified sender:

1. Log in to your Amazon AWS console: https://console.aws.amazon.com

2. Select "Amazon SES" from your list of available AWS applications

3. Select, under "Verified Senders", the "Email Addresses" --> "Verify a new email address"

4. Navigate to that new sender's email, click the confirmation e-mail's link.

And you're all set.