from: Facebook email@example.com reply-to: noreply <firstname.lastname@example.org> to: Achal Tomar <email@example.com> date: Wed, Jul 11, 2012 at 6:57 PM subject: Abhishek Awasthi tagged a photo of you on Facebook >mailed-by: facebookmail.com >signed-by: facebookmail.com
This is details of mail i received from facebook,here mailed-by: and signed-by: headers are same this is important for mail authentication. I also want to implement this in my postfix mail server is there any method to achieve this. My scenario is as following:- I have a centOs 5 server which uses postfix as an MTA,this server uses round robin load balancing technique to balance mails which are sent to other servers for relaying. All the servers are on the same domain suppose "example.com" now what i need is when the mails are sent to the load balancer for relaying then it sends all the mails signed by the same domain that is signed by: header must contain "example.com". Also the mails relayed to the destinations by the relaying servers also must have the same signed by: header of "example.com".