Thanks Paul. I've been confused about this for a while. But a couple of tests convinced me that your description of how this works is correct. -Mike > Not quite; it's because your mail server (Num9.Com) is only seeing a > single > recipient for this email, so it adds the "for" clause. If there was > someone > else with a @num9.com address on fedora-list, there would be multiple > recipients for the mail and the "for" clause wouldn't be added by your > mail > server. It's your mail server that's adding this Received: header, not the > originating mail server. > > (note: some mail servers, notably qmail, always send mail to a single > recipient at a time even if there are multiple recipients for the mail at > a > domain, and others can be configured to do so. Whilst this is very > inefficient, particularly for large messages, mail you receive from such > mail > servers should always cause your mail server to add the "for" clause in > the > Received: header) > > Paul.
