I have not seen this behaviour. If there is not any additional header added where you can filter on as well, it would be very difficult to distinguish between these emails and actual emails from humans. Maybe the best way is to ask your vendor to stop sending these...? -- Mike On Mon, Nov 14, 2011 at 15:14, Muhammad El-Sergani wrote:

Hi all, I'm sure many of you have encountered this case with some of your customers/vendors/partners. Sometimes when we email a certain customer, their ticketing system sends back an email with a manipulated FROM header, sending back what we originally sent. Let me break this down. Our company is www.example.com. We send an email to www.abc.com. Our sender address is support@example.com, and their's is support@abc.com. Original email: From: "EXAMPLE SUPPORT" To: "ABC SUPPORT" Subject: WHATEVER Body: "Bla Bla Bla" Return email (almost instantly): From: "EXAMPLE SUPPORT" To: "EXAMPLE SUPPORT" Subject: Re:WHATEVER Body: "Bla Bla Bla"

Is it possible to drop or ignore this email? In other words, which Postmaster filter should be applied to query for both the name and the address? Thanks //M

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