On 6/8/2012 7:47 AM, Achal tomar wrote: > ok so how can i change he return path dynamically for each > user when he/she sends a mail,so that he return path includes his/her > user ID and also the to: header information,i want to do this in > postfix and i am using centOS 5 as an OS.
This is called VERP and is created by the sending application NOT by Postfix. http://en.wikipedia.org/wiki/Variable_envelope_return_path I use this in my company when sending out messages for bounce processing.
