Re: Filter bounce mails with forged domains

[Mark Farver]

Johan Almqvist wrote:

I'd be interested to see that. The bounce messages from Exchange that 
I have do indeed have an From: line with postmaster@ - however, the 
envelope sender is <> as per RFC.

You are right, the envelope sender is a very easy way to sort out bounces. 

Looking at one of my examples the envelope is <> as it should be.  For 
some stupid reason I was looking at the example and thinking of the 
Sender: header instead of the envelope from the received line.  

I'll shut up now.

Mark Farver