Wietse and Viktor, My boss thinks I posted too much detailed information in my original email during our discussion http://permalink.gmane.org/gmane.mail.postfix.user/245050.
Can I edit my original message or withdraw my original message? Thanks, Carl -----Original Message----- From: owner-postfix-us...@postfix.org [mailto:owner-postfix-us...@postfix.org] On Behalf Of Wietse Venema Sent: Tuesday, July 29, 2014 2:46 PM To: Postfix users Subject: Re: Can Postfix automatically add line "Resent-From: <email address>" in the header? Xie, Wei: > Can't Postfix header_checks perform too complicated rules? Amavisd-new > maybe another big change to us, but this is option. Sorry, delivery decisions MUST NOT be made based on email headers. Email headers do not say where mail comes from, and they do not say where mail goes to. If this is a surprise to you, then you only have to look at this mailing list message. It has my porcupine.org address in the From: header, but it was distributed from cloud9.net. It was delivered to you, but it does not have your address in the header. I recommend that you read up on RFC 5321 and RFC 5322, the Internet email standards. Wietse
