PHP Mail error

Robert Granlund
Robert Granlund used Ask the Experts™
on
I am sending PHP mail but I am getting an error from the server and the emails are being Quarantined.

Here is what I have:
<?php
$headers = 'MIME-Version: 1.0' . "\r\n";
    $headers .= 'Content-Type: text/html; charset=UTF-8' . "\r\n";
		
	$headers .= 'To: '.$to."\r\n";
	$headers .= 'From: '.$from."\r\n".' Return-Path: '.$from."\r\n";
	
	@mail($to, $subject, $message, $headers);

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These are two of the errors.  Please look at the return path.
Console_2017-03-08_15-15-17.png
Console_2017-03-08_15-21-41.png
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hielo
Expert of the Year 2008
Top Expert 2008
Commented:
>> ' Return-Path: '
try getting rid of the space between the apostrophe and the "R":
'Return-Path: '
Most Valuable Expert 2011
Top Expert 2016
Commented:
Looks like you want to remove the "To:" from the headers, too.  It goes into the mail() function call, not in the headers.
Dave BaldwinFixer of Problems
Most Valuable Expert 2014

Commented:
Yes to both of those suggestions.  Email header items must start at the first character on the line and your email server is complaining about duplicate 'To:' lines.

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