said by jbob:I know that bouncing is typically frowned upon unless you know for sure the bounced message will go back to the sender but wouldn't seeing a "Blue Seal" on one of these certified emails be enough to bounce these messages? Guess it'll all depend on what's in the headers.
The bouncing being referred to is having an SMTP server refusing to accept the message based on whatever criteria it wants. This is VERY different from sending a "bounce" message to a (probably forged) From: (or any other) header.