Mail() & Gmail, Unknown Sender

[millercj]

I'm using the php mail function and sending to Gmail accounts it shows "Unknown Sender"

 

This is my header:

$headers = "From: XXXXX\r\nReply-To: XXXX@XXXXX.com";
$headers .= "\r\nContent-Type: text/html; charset='iso-8859-1' Content-Transfer-Encoding: 7bit";

 

I read somewhere that removing the "\r" would work but no luck...

 

any  help would be awesome

[voip03]

"If the sender’s full email address is displayed, then Gmail thinks that you have not communicated with this sender in the past. If the email address is quite long, we'll show you a shortened version.

Once Gmail concludes that you communicate with this sender (for example, if you reply to emails from this sender, or if you add this sender to your address book) we’ll stop displaying their address next to their name

 

http://www.phpfreaks.com/forums/index.php?topic=342096.msg1615989#msg1615989

http://www.google.com/support/forum/p/gmail/thread?tid=620d5c4165fe89e8&hl=en