understanding email header

Hi Coders, I need help in one of my small projects. I wrote a pop3 client, When I receieve the email, I want to know whether it is from postmaster ( I want to know other ways then checking the "from" header), If mail is from postmaster, then I would like to know why I got that mail :- 1) either 'cos of wrong email id. 2) or 'cos of recipient email box full. Checking message text to find this is not appropriate way and I dont think it will work for all pop3 servers, I am looking for something which can let me know mail type from header. U can explain me the how to find these things by reading the header, I dont require any coding. If u seemed promising then I can transfer some of my project load on to u on sharing of project basis. If u have any query then please dont hesitate to ask, I will reply it ASAP. Waiting for bids. Regards, Prady ## Deliverables 1) Complete and fully-functional working program(s) in executable form as well as complete source code of all work done. 2) Deliverables must be in ready-to-run condition, as follows (depending on the nature of the deliverables): a) For web sites or other server-side deliverables intended to only ever exist in one place in the Buyer's environment--Deliverables must be installed by the Seller in ready-to-run condition in the Buyer's environment. b) For all others including desktop software or software the buyer intends to distribute: A software installation package that will install the software in ready-to-run condition on the platform(s) specified in this bid request. 3) All deliverables will be considered "work made for hire" under U.S. Copyright law. Buyer will receive exclusive and complete copyrights to all work purchased. (No GPL, GNU, 3rd party components, etc. unless all copyright ramifications are explained AND AGREED TO by the buyer on the site per the coder's Seller Legal Agreement). ## Platform any