On 7/6/2010 4:51 PM, Josh Cason wrote:
No the message is different. Like this time around they look
like this:

This is an automatically generated Delivery Status Notification.

Delivery to the following recipients failed.

authentical...@raisley.com

Final-Recipient: rfc958;authentical...@raisley.com
Action: failed
Status: 1.2.0


I prefer not keeping a long list of block. I would like to
stop this garbage before it gets to me. The domain and mail
address changes though.

Josh



Start here:
http://www.postfix.org/BACKSCATTER_README.html

And read up on the VBounce rules in SpamAssassin. Since you're using an outside mail filtering service, RBLs won't help.

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